Just bought these 5.25" comps off of j_baby15 (well I don't have them yet), and am wondering wth to power them with. 30 watts nominal isn't much, and the efficiency of 88db isn't real high, so not quite sure what amp to power them with. Don't want anything cheap, but I don't want to spend 300$ for a 100x2 amp if I don't have to. I was thinking 50w x 2 would be ok, but I've read that they're rated quite conservatively. Anyone have any experience or want to add their 2 cents?