So my only vacuum I have is a little 12v cheapo from Wal-Mart that rocks for the occasional piece or dirt, but its worthless for much more than that. So I think I need to pick up a Shop Vac, but I don't know how powerful of one I need. I kinda want to keep it around the $50 range, maybe up to $70 if it'll really be worth it. I've looked around Wal-Mart, Lowes, Home Depot ect and I've found a few different ones ranging from 2.0hp to 4.0hp. My question is really how powerful does a shop vac need to be? Will a 2hp be enough for most jobs or should I go for a 3hp or 4hp Shop Vac? I'm not forseeing a huge ammount of horrible carpets in my future, but I might also grab a Little Green Machine if that'll make any difference in recomending a vac. So what do you guys have?