Same deal as Carkoon. I don't have them all, so I'll only comment on the ones I bought. Hopefully, others will chime in with their own reviews.
Hands down one of the best figures in a long time...a long time. The snap on armor fits snugly and integrates seamlessly as does the helmet. You can barely notice the notches on his sides. Face sculpt is excellent. Great detailing on the armor. Much better than the POTF2 AT-AT pack-in.
Only criticism...angle cut elbows. Ball-jointed works so much better in terms of poseability.
Again, an excellent figure. The sculpting details, paint, and articulation are big pluses for this figure. I like how much range of motion the head has considering it's attached to the chest plate.
Great paint job, bad kitbash. This figure really could've benefitted from the same articulation given to the AT-AT Driver. Adding the cannon would've been nice as well.