I play in a metal band with a Mesa tube amp. Does anyone think that the15/6/1 would work as good as lets say a 610? My amp is about 200watts tube with 6550s. Only reason is that this is the only option at a used price that i could swing. I wish i could afford the 1515/6
Contact this guy [he' in your neck of the woods] and demo a few with your amp...
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FWIW I have a 66 and a Mesa 400+ [about 275 clean watts] and I have moved on to more power - cause the Mesa can't stay clean and get anywhere near what the cab can do.
That said - a 15/6 or F115 plugged in the proper speaker tap will let let you access everything your 200 watt Mesa has got - if that's enough, the cab won't hold you back.