Hey, i'm currently thinking about getting my equip upgraded a bit. Have to go for a 2.0 Interface, so I pointed out three devices i could go for: 1.) LINE6 UX1, which I own at the moment, but guess it's not the best solution 2.) MACKIE ONYX BLACKJACK, good reviews, but also some say there are driver problems going on and it's quite new, not many user reviews available 3.) E-MU TRACKER PRE (or 0404 - which one is better?), which has quite good preamps (according to reviews - maybe I don't need an additional DI box (or do I??)). For which one would you go (or would you actually keep the UX1?), or would you recommend another one? Budget ~200 (~250$) and I'd like to record guitars and vocals mainly. Thanks for your help!