All I know is that since I got my UFX (I was an early adopter) I love it
more each day. I think it is the greatest thing since sliced bread.
The TotalmixFX software interface/mixer is able to route signals any
way you want and will soon be implemented on iPad. Add in OSC control
for apps like Lemur and TouchOSC and you can control it any way you need.
The on board DSP is very nice and comes in handy quite often.
The DURec USB interface will record to a hard drive or USB stick
and will keep recording any combination of inputs/outputs even if your
computer crashes.
With thirty outputs you have enough to run multiple sets of monitors
including surround with plenty to spare for headphone mixes.
As far as sound goes, I love it too. Clean and quiet. I believe it
uses a TI preamp chip if that means anything to anyone. I am not a
tech spec measurement type so I cant really speak to that.
I don't have a lot of experience with some of the higher end preamps
that folks like around here (I was using GML and Millenia the other day)
and would suspect that recording technique and room would make a bigger
difference than spending the whole two grand on a single mic pre.
I am waiting on RME to ship the new Octamic XTC and will pair them.
The sheer versatility of this unit is amazing.
Oh, did I mention USB Class Compliance and standalone modes?