Stingy,
not online every, and don't check the forum each day that I can. But, you post caught my eye today, cause I am 6'5" 250lbs.
I would have reccommeded you going with the 23in frames as well, I have ridden 21.5s before, but the 23 was a better fit.
the last two bikes were Giants, a 23 and a 22.5, and I have a 23 in Specilized Hardrock in the grarage as well.
Enjoy.