It's a cool little box!!
Hey I've been using the Us-122 for about a week and a half now, I like it personally, but it might not be for you. It depends on how much you're planning on recording at once, what kind of computer/software you will be using and stuff like that. Personally though, the price was right for me, and it's very simple to use (I use it with Logic on a 500 mhz mac) and it sounds good =).
Hope it helps.
GLen
Oh and yes I've recorded an acoustic with a condensor/dynamic on the left and right mic ins and it sounds good, check out apl's song too!