I am recording with the Presonus Firebox and it sounds decent. I am sort of coming to the conclusion that AD converters contribute more to a truly professional sound than a preamp or mic once you overcome a certain ultra budget level. Basically, the first component I might want to upgrade are my converters and then go from there. Emu coverters seem to be of a higher quality than the Firebox. Emu boasts that their converters in the 1212m and 1616m are the same as the ones used in a $1,700 Motu device. Does anyone have experience with the Firebox and Emu products and think it would be worth upgrading, or should I wait a few years and get an RME or other high end product. Essentially, is buying an Emu just trading sideways or is it an upgrade. Here is what I have now: Presonus Firebox, presonus tube pre, presonus headphone amp, Joe Meek VC3; Groove Tubes GT55 mic, Shure Beta 58a, PG58, SM86; Cubase SX3, Waves plugins, EZdrummer; GTR3, PODxt, Sansamp GT2- tons of guitars and real amps.