Can't say why but i have Hex, Silo and Carrara and like Carrara best. This might well be because I've owned Carrara since version 1 and only bought Hex and Silo recently.. but, while I like those models for several things and really like Hex's UVmapping features (and those of the Silo 2 demo even more) I just find Carrara's work flow more familiar and easier. Also the fact that Carrara interfaces so well with Poser (up to version 6 anyway) and has it's own substantial animation tools and a kick ass renderer, I find it a decent general service studio for the beginner.

mike