Well, I got an N1 after my old M1 finally broke down. I connected the N1 to my stereo system and I think it sounds pretty good. The N1 has extra ROM compared to the N5 so it has its own piano, organ and other good sampled sounds. It's certainly superior to the M1. I don't think typical store headphones do justice the the full capabilities of synths. Ask the dealer to connect the N1 to some good speakers for a better evaluation.