Thanks for the advice. My friend advice the nv because I been around him for years he’s a dj and he feels I will quickly learn through him I shouldn’t miss out on the nv. I agree but I’m not sure how I feel about buying used gear. He test the controller and is sure it’s new. I feel 450 might be pushing especially since the new nv2 will be release on the first making nv drop in price. My situation is if I decide not to go with the nv which beginner controller sb2 or denon mc4000. Denon mc4000 is currently on sale last day to get it for 380.