Sound quality will depend more on the microphone and preamp your recording with then the interface though. What mic are you planning to use with the Duet?
And no, the Air isn't crazy powerful but it streams off SSD instead of spooling a hard drive so it's quick. I rap and songwrite and make acoustic music and don't really produce anymore which is why I want something small; and also why I just want Logic Express over Logic. I could probably get by with Garageband and just get better effects plugins though. That's why I want LE because the simple interface but better editing/effects.
Also the Air update is supposed to make it run on an i3 or i5 or something as far as I understand. My Macbook is just a Core 2 Duo with 2 gb of ram so an Air with a SSD and 4gb of ram should be perfect.
Duet 2 will be nice I imagine though. Just spendy. Again really hoping they just update the One and I'll be all over that.
Or again like I was saying earlier, I could ditch it all and just get an ipad lol. I don't know haha.
I am a professional rapper