I wanted to stay with RME and also wanted to get rid of the PCI card - my new mobo only has 3 PCI slots (as well as 3 PCI-e) and I was only able to fit 1 UAD-1 and my Powercore.
I NEEDED my other UAD-1 in there so the soundcard replacement had to be USB2 or Firewire. I have a lot of USB stuff on the comp, so I decided Firewire.
As for hardware I haven't got much anymore - I have sold a lot of it. I now only have a Vox Guitar pre-amp, Dave Smiths Evolver, the TI and also a (now unused) Virus C XL.
I like the Total Mix patchbay capabilities and using it I am able to quickly alter what is going through the TI filters or the Vox preamp etc or the Evolver distortion...
The Fireface 400 wouldn't do all this and the 800 was not much more in comparison to the 400.
Listen to me, I sound like I am trying to justify it to the missus
I'll try and sort out some pics for you at some point, although at the moment I am real hesitant as the place is an absolute shit-heap!