I have an M-Audio FireWire interface which is very mobile and an FMR RNC Mic Preamp. I use them to record classical acoustic concerts and recitals and I like both of them. However, I am looking at the TC Electronics Impact Twin. It "MAY" have a little more clean gain for use with Ribbons and the A/D conversion should be a little better than the M-Audio. The TC unit can be had for $400. The M-Audio and FMR together cost $900. I won't sell the RNC no matter what and it's not exactly apples to apples as the M-Audio handles more inputs and the TC has processing. I just want to get as clean as possible audio into my laptop with minimal set up. I usually record only 2 track stereo but want to keep the option of at least 4 simultaneous tracks. I'd appreciate your opinions.