I know this has been mentioned recently, but if you want a fresh perspective on your POD HD500/500x, definitely fire up the Gibtone model with its own cab sim, and TRY IT WITH THE RIBBON 121 - feel free to crank the map's treble and presence settings because that ribbon has a huge high end roll-off (as it should). There is a preset in the 'Best of HD' setlist called 'Roomy' that gets close -- IF you take the early reflections out (which gives the preset its name). I almost missed out on the goodies because of the crazy reflections, but when I listened to it dry - WOW. I got stuck playing my 335 for an hour. Just thought you should know!