I'm looking for a smaller amp, around 100 watts, for reahearsals and gigs where less volume is required. There's a used Workingman's 12 and a used Workingman's 15 for sale locally. Questions: What is the difference in sound? Who's played both and what were your impressions? Who has either one and what do you think of them? The 15 is quite a bit cheaper than the 12. I haven't been able to get a hold of either seller yet, so I've not played either one. I just want some info in the mean time. Also, there's a TKO 115 priced in between the two SWR's that I'm considering as well. Any opinions on that amp? TIA.