Abominable Snow Mobster
Used to main Engie for the longest time (He remains my favorite class), but now I main Pyro/Soldier.
Pyro:
Strange Flamethrower/Strange Flare Gun/Vintage Homewrecker
Handyman's Handle/Vintage Stockbroker's Scarf
Soldier:
Strange Direct Hit (Sometimes Strange Rocket Launcher, but purely situational)/Strange Shotgun/Disciplinary Action
Vintage Stainless Steel Pot/Grizzled Veteran
And, for the shits and giggles, Engie:
Strange Shotgun/Lugermorph/Vintage Southern Hospitality
Industrial Festivizer/Grizzled Veteran
That isn't to say I hate all the other classes, I don't. I hated Demoman and Sniper for the longest time, but once I got used to Demo, I love him, and Sniper's new sniper makes me want to play him a little more.