I almost walked out with a JSX head the day I got my VHT Pittbull 100CL... 15 years ago maybe? I have zero regrets about choosing the Pittbull, still play through it almost daily, but I like Peavey's heads a lot and at 600 bucks I feel like I ought to try to find one of these for a backup. Considering a 5150 II goes for more than twice that, it's a steal. Would be interested to play through it again after this amount of time. The guitarist in the band I play bass for uses a XXX and it sounds great - pots seem perenially messed up and there's always some setting between channels that needs to be tweaked, but I can't complain about the tone. They aren't the be all/end all line of heads, but fantastic at bang for the buck.