That is the exact amp I have! However I run it at 4 ohms with a couple of the old school 410T cabs (they don't make them anymore, not quite as nice as the XLT but a little easier to handle, hehe). Like you, I usually never have to turn it past half, when I get a little boozed up the gain might creep to 1 o'clock....
I love my amp as well and I don't think I will ever sell it....even if I buy an SVT.