OK, I gotta know. I see a deal on an Ampeg 410 Classic (looks like an HE) on CL. I already have an Ampeg 610hlf. Would stacking them under my Peavey Mark XVIII XP (350 watts/4 ohms, 600/2 ohms) be 2 10s "better" than a fridge? Pros? Cons? Overkill or just silly? TIA!