Tunnel Rat V1. Not only my favourite figure, but his character in the movie was pretty cool and other than Jinx was the most believable. A cockey rookie who thinks he's done it all but worse. And besides it's nice to see a Joe with an attitude
Honourable mentions are Crankcase and Outback.
Cranky just is a great realistic based figure, though his British gentleman's hairstyle clashes with his personality.
And Outback... Well, what's not to love? Perhaps the best sculpted oldscool face, fantastic accessories... A great figure!!
I have never been one for your Snake Eyes, General Hawk or Duke. The less used a character, the more fun you can have with inventing them.