How much are they? If they're around 300 bucks or so I'd just go with some thing that you know is good. Well you may not but I do, go with the 12" Eclipse Aluminums. But I'm sad to tell you that the cost of car audio really does determine how good it is usually. It also depends on what you want the sub to do. If you just want bass thats loud as sh*t then just get some MA Audio or some crap like that. It's not gonna sound very good (don't start flamin me MA Audio guys), but it'll be loud. But please don't go this route, IMO this takes no skill and its gets old real fast. Get something that sounds good an can bass out if you feel that you need to. Plus the Eclipses look really sweet. They have the same stats as the ones that you found. BUT in car audio, stats don't really mean shit. Literally. Just ask people on here before you dive in to buying stuff, most people on here have pretty good taste in car audio. Here's my rule of thumb, if they sell it at BB or Circuit City or a flea market, don't buy it. Thomas Kenyon can hook you up on some stuff, but you probably won't wanna pay shipping on those subs, i think they are like 40 pounds a piece.