Ok I was pretty set on getting a Fender Super Champ X2 this summer but then I heard about these things. There is a whole series of them–Yamaha started with the small THR5 and bigger THR10 last year, then added the THR10X for people who want more gain and distortion and the THR10C for people who want clean tones. I like it pretty clean so I think this one is for me. I actually like the size and color (and price) of the THR5 better, but the 10s have a separate volume control for the AUX in for when you want to use it to play music, so that it probably worth the extra $100.
Anyway, I play in my living room a lot and think this would be better than having a another bigger Fender amp for everyone to trip over. Plus I can use it to play music in the kitchen while cooking, bring it camping, etc.