I recently picked up a Mesa D-800+ and have used the Aguilar TH 500 a number of times. I took to the Mesa amp immediately. The Tonehammer required a lot of tweaking to get something close to what I was after, and I still wasn't necessarily in love with it. I'll put it this way; when I was shopping for an amp recently, the TH500 didn't make the short list. For me, the Mesa D-800+ is getting the job done. I'm very happy with it.