Then there is the performance. Catalyst is blisteringly quick compared to QLab - the performance is sooo much better on the same Mac. I used to keep QLab and Catalyst in rental. QLab requires tons of RAM to play nicely, which Catalyst does not. What you save in the license fee on Qlab, you pay for in RAM.

QLab is a pretty good piece of software, however, and for shows that do not need Catalyst's bells and whistles can be well served by QLab. It is also a bit more accessible too. However, to say that it is cheaper is a fallacy. The license is cheaper, but you need a pimp daddy Mac + tons of RAM to make it work nicely in a professional application.

Hugh