Just wanted to pop in and say that I'm considering 3 interfaces now; NI Komplete Audio 6, Steinberg UR28M, and the SD USBPre 2. The RME BF is just too expensive and has too many channels, and the MOTU 4Pre seems to have nothing going for it but the hybrid USB/FW design. Unless it has better pres than the three I'm considering, I'll pass on it.
1. NI Komplete Audio 6. $230, you get a nice little software bundle with it. I've heard good things about the sound quality, but I haven't found any clips myself.
2. Steinberg UR28M. $400, comes with Cubase. Only one of the 3 with DSP. I've heard good things about this one as well, except on the D/A front.
3. SD USBPre 2. $650. The only thing I'm sure of is it has good sound. Besides that, it's a bare-bones interface.
I'm stuck (again

). I want good pres, and good sound in general, but I also want "room" in case I decide to use external pre-amps in the future. I like the software included with the first 2 interfaces, particularly the UR28M, but fear they'll lack in the pre and converter department.