Well... it depends on the situation.
For me, v1s were the easiest to care for because you didn't actually have to go far in the game to lose the maximum amount of weight for that game. Which is why I don't mind the v1 games that much.
I hate v4s and v4.5s with a passion, but I'd say that v4.5 probably had the best games (though I've only played them a few times on my friend's v4.5).
