form my personal tests, I've found that Nomad sucks, MD2 sucks when its unmodded and early MD1 wins unmodded. I don't know about later MD1s, they have shittier sound, but that sound should still be better than anything else besides early units. The one thing MD2 fails at is high freqs, and same for Nomad, I haven o idea where did that guy heard them... MD2 is clear winner when you have modded one, no noise to speak of and all freq range is unaltered. Also MD2 features more higher quality audio chip implementation than MD1 does. I'm going to work out a Nomad audio mod too sometime (when I get few Nomads). It is pretty much MD2 with a screen, and has integrated YM2612 which is most likely the better kind one... its just that all analog parts related to audio in MD suck in their original form.