I've been using the Fireface 800 for pretty much every PC / Mac I've been using for entertainment (in the case of my gaming machines, in conjunction with a gaming soundcard), with a few exceptions. But the Fireface product is a good few years old now and I was wondering if there was an interface that raised the game. I've bought two Pros which will replace an MBP and an iMac, and the idea is that the Pros will take a more permanent place in my workroom - which means they will have soundcards attached. I thought the new machines was a good excuse to try out a new one than just go and buy another two Firefaces. New card specs I'd want are: - Cross-platform, Vista 32/64-bit compatible, Tiger/Leopard compatible. - USB or Firewire (400 or 800, not bus powered) interface. - I'd like it to be a lot smaller if possible, if possible no bigger than the Fireface 400. It doesn't have to be 1U height though... 2U (or a non-rackmount size altogether as long as it's not more than the equivalent of 2U) is OK. - I need it to have at least two pairs of un/balanced outputs. At least one pair of un/balanced line+mic inputs with phantom power. - SPDIF in/out both optical and RCA, word clock in and out. - Should be able to output at least 4 channels of 32/192 audio simultaneously to balanced outputs. - The audio core performance should exceed the Fireface. Any recommendations?