Wordpress Thesis theme - feedback from users would be great

I love wordpress, i use a few different free themes for my sites, i have found suffusion to be the best for my needs. I have read alot on the thesis premium theme and i know quite a few casino affiliate sites are built with this theme, so i wanted to ask if any of you guys/girls are using thesis and can you tell me if its
a. worth the $180?
b. is it awesome?
c. are there any negatives with it
d. what are the positives with it
e. is it difficult to set up, compared to other wordpress theme
cheers