I mostly use clean sounds, but im hooked on the AC30 (not TB), its nice and smooth, but i have an AC30, may be a link there.
I also use 'aux in' via a small mixer, great for mic, in smaller venues.
The fx are sweet, but i never use them, not my style.
Foot switch is a great adition, for some expression on intro's and outro's.
The 12" speaker gives bigpp sound too.
My overall view is, too many grind channels, even though theyre nice sounding grind.
The rest of this machine is, so far, ok, and well worth its cost.