I used to own the original mbox and I now own the ultralite, and I love the ultralite! I've had zero problems with the ultralite, and I did have some problems with my mbox and had to send it back to digidesign. I have not used the mbox2 pro, but how many ins and outs does it have? The ultralite has a ton of them, so with extra preamps you can record a drumset no prob. The preamps on the ultralite are pretty solid as well. Oh, and I'm using Logic
Express 7.2, and they work together perfectly.