Just do a search for 'Emotiva' and you should find many threads.

This has been discussed a lot and I don't think there's a whole lot more that can really be said about the issue.

M80v2 | VP150v2 | QS8v2
SVS Pci+ 20-39
Emotiva UMC-1 & LPA-1
M22ti + T-Amp, in the Office