Just out of curiosity, did you demo a Mesa?

I think my leanings would be for something more versitle for my 1st
tube amp, from what I've read the XXX is a one trick pony. For the cash, you could by a combo like a VHT or Mesa that would blow the Peavey out of the water.
My rationale is that you might try another amp down the road and say to your self "I should've tried more amps 1st"
Also compare resale values, it is a decent indication as to the amp's desirability factor down the road. MSRP on the 120 watt head is just over $1500, but you see them on the bay for around $750-850 used or new, depending.
Make sure you check all your options.
Bamm