I purchased the Vader/Bow set from a local collector today. It is very cool, it's the only one I planned on getting, and after seeing all of them in person at the collector's store, I am going to stick to that.
Here's what I think of these sets:
Yoda/Clone Trooper: The Yoda was the worst possible sculpt they could've given us, and it looks like a sick Wookiee threw up on the clone trooper. The worst set of the bunch by a thousand miles.
Obi-Wan/AT-RT Driver: Once again, the Obi is the worst possible sculpt they could have given us. The
AT-RT Driver has been proven by Hasbro to only look good in its movie colors, because the one from the tin was appalling, and I'm gonna call this latest repaint, 'the candy corn clone' for obvious reasons.
Palpy/Thire: Thire is awesome, I really like him, but the innaccurate Palpatine? Come on, Hasbro! You could've at least given us the alternate post-Mace duel headsculpt that is just as easy. That bugs me.
Mace Windu/Marine: I have stated my opinion of this Mace Windu figure too many times to state it again. In short, it's bad. Very bad. The Galactic Marine is a good sculpt but the paint aps are way too cheesy to work. It's not as bad as the candy corn clone, but its not very good. However, this is the second best set out of the six, simply because it's not as bad as the other four 'bad' ones.
Ani/Airborne: The Airborne Trooper just looks hideous. It is not meant to have 501st paint aps, at all. Awful. The Anakin, eh, it could be worse, that's how I'll look at him, because it's not a bad sculpt but its not the best sculpt.
VADER/BOW!!!!!!

: Excellent set. The only one that has two good sculpts. Vader is the best possible sculpt around unlike Yoda and Obi, and the Bow figure is, I'll use Hasbro's favorite word, 'sensational.'