hey guys.. i sold my old rockford fosgate subs and amp a while back to a friend who really wanted them.. at the time i wasnt really attached so i gave em up.. im looking at getting another setup but will openly admit i know nothing about stereo systems.. i have two 10" sub enclosures (http://bassforms.com/bassforms/tc.html) and wanted a decent set of subs to go in.. im currently running everything off of a Alpine CDA-9857 HU ( i know i know lots of people hate this HU but hey it will work til i can afford anything else)... i was wondering what are some good subs out there that are resonably priced? on ebay i found a set of Rockford fosgate stage 3 P310D4 10" subs for $180.. is this a good price? are these good subs? and what amp should i run these off of? remember i know nothing about systems.. so RMS, watts, ohms etc are all new to me.. any help out there?