According to different posts in other fora, Mountain Lion runs zippier than Lion, is, for a .0 version, amazingly stabile, and is well worth the 20 bucks it costs.
Issues I'd have:
- FCS 2 is finally broken. FCS 3 works, but there are some problems with some plugins.
- Canon XF Utility doesn't work. Not that it is actually needed, but i use it for transferring my cards from the camera. It is a nice tool to preview your footage (a hold over from tape workflow for me).
I hope my CS6 license will come soon, then I'll install ML on at least one machine. Even if that means to say good bye to an old, trusted friend (FCS).