Alright I'm confused. I haven't really messed with Cubase, but I got Cubase 4, which I hven't been able to burn yet, Cubase SX 3, Nuendo 3, and now I see there's a Cubase SX 4, I don't know what's what and what's suppose to be the difference. Nuendo looks a lot like SX to me. What are the differences?????