I've never really had bug problems with my Vue; I just hope version 6 is everything they're promising (faster renders, rewritten code). I've been fiddling with World Builder lately. I like it more than Vue because it is quite a bit faster and is not as noisy. It's "niche market" is a little scary though. I really want to use Vue but I think (Infinite up to now) is not adequate for animation production at the moment.