I'd been thinking of trying one of these for a little while now and spotted them on Amazon for $507. I thought about it for a while then when I looked again the price had jumped to $517 and I decided to grab one at that price. They've gone up to $582 now unfortunately, but that still seems a good deal to me.
These pedals are like Kemper profilers but according to many their amp profiles are more accurate, and they're a lot cheaper. You do need to buy a separate box or have an appropriate audio interface if you want to profile your own amps, but the pedal comes loaded with a crap load of amp profiles and there are a tonne more available online for free too.
Wish this could do stereo amps.