Okay... so here's another amp thread by me, but it's getting down to the wire for my decision. Of the four amps (Ampeg B100R, Peavey TNT 115, Yorkville BassMaster XM200, Kustom KBA100x) I am considering, this is the only one I've tried. Basic specs are: Gain, volume, notch, 20 to 2K fequency range 6 - band eq, and effects level & selection controls, Celestion 15" speaker; rated at 100 watts, cost: $350. The one I played sounded very, very nice and hi-fi; the built in effects had a strangely favorable "digitized" sound. It sounds nice, but does it hold up in the long run? Anybody have experience with this amp, or the others I mentioned?