This set is on fire (no pun intended).
I purchased one retail hanger box of 2014 Topps Fire Football for $9.82 which contains at least 72 cards. That's a bargain considering this series was printed on a higher quality stock than Topps lower end series which also includes 72 cards in its hanger boxes.

Base Cards
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4 - Julius Thomas
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15 - Andre Johnson
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17 - EJ Manuel
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19 - Ronnie Lott
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21 - Arian Foster
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26 - Cam Newton
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27 - Rob Gronkowski

Gronkowski finished the 2014 as his second best. He caught 82 receptions for 1,124 yards and 12 touchdowns. That's impressive considering he recovered from an ACL/MCL surgery during the 2013 season.
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32 - Dan Marino
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33 - Randall Cobb
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36 - Steve Young
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37 - Michael Floyd
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40 - Eli Manning
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41 - Zac Stacy
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42 - Nick Foles
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44 - T.Y. Hilton
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45 - Ndamukong Suh
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51 - Larry Fitzgerald
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52 - Eddie Lacy
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53 - Jason Pierre-Paul
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54 - Brett Favre

I was surprised to pull a "Brett Favre" card in a "2014" set aimed towards active players.
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55 - Robert Griffin III
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61 - Joe Namath
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63 - Matthew Stafford
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68 - Frank Gore
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69 - Dez Bryant

Bryant broke Terrell Owens franchise record of 15 TD scores during the 2014 season.
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70 - Alshon Jeffery
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73 - Drew Brees

Brees finished the 2014 season with a career high 95.4 passer rating.
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76 - Troy Polamalu
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77 - Doug Martin
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78 - Keenan Allen
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79 - Alfred Morris
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80 - Jay Cutler
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81 - Von Miller
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82 - Reggie Bush
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84 - Antonio Brown
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85 - Earl Thomas
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88 - Calvin Johnson
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91 - Wes Welker
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92 - Tony Romo

Romo's 97.6 passer rating (as of Week 17, 2014) is the second best in NFL history.
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93 - Matt Ryan
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106 - Tom Savage
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108 - Logan Thomas
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110 - Martavis Bryant
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112 - Jadeveon Clowney
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116 - Cody Latimer
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120 - Bruce Ellington
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122 - AJ McCarron
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127 - Donte Moncrief
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131 - John Brown
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132 - Brandin Cooks
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133 - Jeremy Hill
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136 - Charles Sims
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137 - Allen Robinson
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140 - Ka’Deem Carey
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142 - Bishop Sankey
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145 - Davante Adams
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146 - Jarvis Landry
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148 - Kelvin Benjamin
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149 - Eric Ebron
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150 - David Fales
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151 - Carlos Hyde
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152 - Tre Mason
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154 - Derek Carr
Insert Cards
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CF-RN - Aaron Rodgers / Jordy Nelson

Rodgers and Nelson is arguably the most dominant QB/WR combination in the league today.
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FF-BS - Bishop Sankey

I normally don't like die-cut cards, but this card is sick. Sankey finished the 2014 season with 569 yards and 2 touchdowns.
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OOW-JC - Jadeveon Clowney

Clowney was the number one pick during the 2014 NFL Draft. He finished his rookie season with only 7 tackles because he required surgery to repair his meniscus. What a bummer.
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Flame Foil 10 - Demaryius Thomas

Thomas recorded his 3rd consecutive 1,000 yard season in 2014.
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Flame Foil 16 - Percy Harvin

Harvin has played for four teams since 2009 (Minnesota Vikings, Seattle Seahawks, New York Jets and Buffalo Bills). Go figure...
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Flame Foil 50 - Jimmy Graham

Graham was traded to the Seattle Seahawks after the 2014 season.
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Flame Foil 96 - A.J. Green

Green recorded his 4th consecutive 1,000 yard season in 2014.
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Purple 146 - Jarvis Landry (serial numbered 312/499)

Landry finished his rookie 2014 season with 758 yards for 5 touchdowns.
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Blue 29 - Montee Ball (serial numbered 122/299 | retail hanger box odds 1:2)

Ball suffered a groin injury in week 5 during the 2014 season which pretty much ended his season.
This set looks fantastic! I give Topps credit for thinking outside the box, which is nice surprise considering most trading card sets these days are conservative.