It all depends on my mood. It also depends on how one defines "thicker". I mainly am attracted to the spinner. Well, actually a notch up from spinner. Spinner kind of implies a stick figure-- petite pixie. It also implies someone on the shortish side-- under 5-6 or so. I tend to go for the girls in the 5-8 range with some curves to their body. I tend to classify this as the athletic type. As for thicker, I think of it in terms of the density of a provider-- well toned, well defined muscles that are tight and taut. To me thicker is even more athletic-- no fat, just built solid. I had an awesome experience with a provider who could be described as thicker. She had excellent muscle control. That came in handy during RCG
After that, I guess we can get into terms for more of the "soft bodies"-- average, fluff, curvy, etc. Not my cup of tea unless the individual has a stellar reputation or award winning personality.