I completely agree about the Rancor. It is a pain in the ass to keep balanced, but it looks good holding a Gamorrean or Luke. They did an excellent job combining the flat look of the skin with the glossy mouth, like Ook said. The Luke is a good sculpt, but not great. The bone accessory was definitely a nice touch.
I don't have any of the band pairs, I never even saw them. With the release of Rappertunie, they may re-do the others, but again who knows why Hasbro does anything they do. Just take a look at tyhe Fan's Choice #6.