This is a cool topic, here's my favorite versions:

1. Duke (Think I'll go with the mission disc Spy Troops figure)

2. RoadBlock (I don't have a Roadblock right now, so I'm more likely to use Repeater or Rock N Roll for a Machine Gunner. However I do plan on getting the 25A five pack, so I would use that one.)

3. Beachhead (V2 - Battle Corps. I always liked Beachhead, and this was the first version I was able to buy in the store. It's grown on me since I've been using him in dios.)

4. Scarlett (I like the VvV that came with Switch Gears)

5. Snake eyes (For now I would use the V1 that came with the DVDs, but will likely switch to 25A. I prefer him as a commando)

6. Stalker (I have the JVC figure, but would use Tundra ranger for arctic missions. We'll see if he has a 25A figure)

7. Hawk (aka General Abernathy, aka Tomahawk) (I'd like the get the #76 comic pack, the only version I have is the jetpack, which I thought was cool back in the day, but looks too superheroish now.)

8. Cobra Commander (Definitely VvV with the removable helmet)

9. Destro (I like the gold headed Iron Grenadiers version the best. Not really a fan of the puffy collar versions)

10. Storm Shadow (V2, I've had it for years, but it's still cool)

11. Major Bludd (I plan on getting DTC)

12. Baroness (Not really into this character)

13. Zartan (probably go with V1 since a lot of the others are really bad... orange mohawk?!)

14. Zarana (not really into this character either)

15. Flint (I'll take the 1987 version. Yep, I'd use Falcon before I use Flint, but for Flint, I'd probably take the #76 comic pack.)

16. Gung Ho (I don't have this figure, so I'll go with 25A)

17. Lady Jaye (I don't use dead characters, so I'm not sure)

18. Dr MindBender (Definitely the lab coat version, I can't take shirtless guys seriously)

19. Xamot and Tomax (Not a huge fan of these characters, but I'd go with V1)

20. Clutch (Not familiar with his variations, guess I'd go with V1)