Anyone familiar with (and likes) Pinnacle? Seems very unstable

I purchased Pinnacle Studio 11 Ultimate a couple of weeks ago as it appeared to have decent reviews, and supports 5.1 for under $200. So far, this is the MOST UNSTABLE software I have ever expireienced. I have had every error this thing could possibly throw at me, yet by doing absolutely nothing different, I have managed to make 6 sweet DVD movies. I was almost to the point of returning it after just one week as their website was down for over 4 days, and their support flat out stunk.

GREAT GUI, but again, very unstable. Anyone have a similar experience, or preference for another program after using Pinnacle?

Thanks in advance to those that respond