Nuendo is for post production, it has everything cubase sx has it it but it is really for working with film. If you are just makin beats cubase is all you need. I do some work at a studio that uses nuendo, and I have used sx for many projects %90 of the things I do cubase is enough, but when I am working on a HUGE project or working with picture I have to go to nuendo. But for beats I find myself using reason for almost the whole project. Man I love reason.