So yesterday the last of my valve amps sold, I'm now purely using the POD HD500 into my PC. Obviously since this in now my only rig, I'd like to get the most out of it. I'll be looking to upgrade my speakers, and get a dedicated audio interface rather than using the POD. I've been looking at KRK Rokit monitors - for guitar use, I'm assuming that the 8" would be the best? Any other monitors in the same price range worth looking at? Also, how are people connecting their PODs to the interface? Is SPDIF worth looking at as opposed to 1/4" TRS?