Peavey 5150 vs hughes and kettner switchblade for thrash sound?

the peavey 515o has 5-12AX7's and 4 6l6's. h&k has 2-12AX7's and 4 EL34's. They're are both around the same price. I really don't care for the "clean" sound. I'm looking for all around good head for any metal i want to throw at it.