I voted for the GK because the 4*12 neo cab is one of the best cabs Ive ever heard. Most TBers who have spoken on this issue agree- the GK cab sounds a lot better than the aggie one. Plus, its lighter. Ampeg's 8*10 sounds cool, but it lacks versatility. Its a 'classic' sound but good luck getting any other sound out of it other than the thick mid-range heavy thump its famous for.
I've had a Mesa 400+ played into an Ampeg 810 before. Nice rocksound. And i've played the Mesa into a Mesa 1516B lots of times. A little more versatile!
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