Rivera, Mesa Boogie, Marshall JVMs. Quite a few others will give you incredible clean, crunch and overdriven tones with one box, and let you switch between them with a footswitch. Won't let you blend them the way a multi-amp setup will, but for gigging there is nothing better than a good channel-switching amp.
I've seriously been looking for a 1x12" combo, two channel, no silly-ass programmable banks or huge footswitches. Simple and reliable.
The Mesa Fillmore 50 Combo keeps coming to mind and it's only 45 pounds, vs. my DSL40C's which weighed 64 pounds each when fitted with 50 Watt WGS Reaper 55Hz speakers...
Hmmmm....

