Trace are very expensive - and usually good, but the bass freak I mentioned above is now running Ashdown stacks, and his previous Trace Elliott stack spent an awful lot of time at the menders.

If you like a hard-edged sound, the Hartkes pack an awful lot of punch into quite a small box, but again they are very dear.

Another friend of mine runs his keyboard (for bigger gigs) through a Mashall combo - but it HAS to be a keyboard one, guitar distortion is the very last thing you want.