I think that its a nice set of sounds, and the thing is extremely heavy. i don't know if you plan on gigging with it, if its the best choice, I know the QS8 is a sturdier, non-wood grain side keyboard, with about the same amount of sounds thru expandability.

i have the N1Rack, and an Alesis QS6 as a controller/sampler(thru flash ram), and I love it. The N1 gives me all the sounds I need for composing, and scoring, etc.