I know these don't quite do the same thing but I often just use the Nova into a clean amp if I don't have my own rig or I'm renting an amp. I'm thinking the POD could sound better here than the drives in the Nova. Plus, I love switching presets rather than tap dancing. The other thing is, I use the Nova in the loop of my 5150 III 50w and switch the amp and fx at the same time via MIDI. First question is, can I do this with the HD500? Second question, how is the quality of the FX in comparison to the Nova? How about the AD/DA conversion - any coloration? Any info would be great.