My Xonar D1 is eating up a precious expansion slot in my main rig (six slots, four PCIe, two PCI, both GTX285s eat up three PCIe slots and one PCI slot) and I am interesting in getting a USB sound device. I am willing to spend up to 200$ (but up to 150$ preferred) at a Microcenter (I'll be in the US in about two weeks and right next to a Microcenter) or via Newegg. I would like the device to have optical input and output, coax input and output, a standard set of plugs for a 7.1 setup, very high sound quality and VERY GOOD driver support (the later is critical) for Windows 7 64-bit and 64-bit Linux (latter not a must). I am not very knowledgeable in sound cards, so I could really use your help. Thanks!