I've been collecting Star Wars figures since 1978 and with a few exceptions I feel that the ROTS figures are some of Hasbro's best ever. The details and articulation of the Jedi figures are outstanding. Luminara, Shaak Ti, Ki-Adi Mundi, Saesee Tiin, and Plo Koon in particular have some great detailing in the paint jobs (check out Luminara's boots) and I love the articulation (ball joints rule!). ROTS C-3PO is the finest sculpt of the protocol droid I've ever seen.
My biggest complaint with the initial line of AOTC figures were the "action poses" that some of the figures were "frozen" in, like the preview Jango Fett and the first Padme figure. I prefer figures with neutral sculpts and multiple points of articulation. I realize some of the action features like slashing and quick draw action may annoy some folks but I think over all Hasbro has done an outstanding job.