I've tried Carrara and been very disapointed myself. Aside from the weird interface (I seem to always be in the wrong room ;-) I found the application to be rather "shallow". I much prefer a more focused application like VUe that does less stuff on the paper, but gives you top notch results in the end! I haven't ordered Vue 5 yet (waiting on Pro), but I'm really impressed by what I see of 5 so far. My 2 cents.