I've had the Pod HD Desktop a couple of times but got frustrated with it and let it go both times. I use my 11R as my main device, straight to an Alto TS112A, and that works well; however, I have this nagging feeling I needed to properly experience the HD500. Also it could function as the backup if/when my 11R has a hiccup. Today I picked up a pristine 2nd hand HD500 for a sensible price. I quickly got a halfway reasonable Engl tone, and the compressor + Fender amp tone is great (as I remembered from the Desktop version). I'm not having so much luck with the Marshall patches though. The user interface is ok, not as good as 11R or Boss GT100, but easy enough. I just wish it had some sensible EQs. The form factor is excellent - I can see why these things are popular. It remains to be seen if I can get tones that are 90-95% of the 11R. More to come.