I play mostly jazz and blues - I tried out a Tech 21 and, although not for tube-tone purists, it has a number of useful sounds for the music I play, plus they seem reasonably priced. I prefer it to the Line 6 amps I tried. Any experience with the 60w or 120w models? How do they hold up? Have you gigged with them (small-to-midsize clubs)? thanks in advance.