I'm going to go out on a limb and am likely going to sound like a real dick here. You're "new to the game", your own words right? Please listen and answer the questions that everyone is asking you. You're already beginning like a lot of the bunches of the young new members we've seen on come on here who ask a question like this, then totally disregard what gets said and recommended to them. You may have had your mind made up before you asked for a recommendation here because some friends are telling you this sub or that amp or this design is the best, but NO ONE here is going to be recommending anything to you that will lead you wrong, and if someone would happen to the other members would catch and correct it because we're like family here and we do care. Now that the rant is over, how much experience do you have with car audio? I am assuming the RE 5000 watt amp you're looking at is the XTX 5000.1 which is rated 2500wrms @ 1ohm, 1700wrms @ 2 ohm and 1000wrms @ 4 ohm. I also assume that you had planned on running those Powerbass subs wired to 2 ohms on the amp for 1700wrms of power. While that would be a decent match of equipment your planned starting electrical setup will be very marginal at running it. If this is your first system then listen to these guys and do something a little different. I think you could get by spending a little less money and be happier with the results without stressing the electrical system so badly. Lurker had suggested the DCON's or Fi X's, which are both great subs that fall in your budget. They don't require tons of power to sound good and get loud either at 300wrms and 250wrms rated handling respectively. There's also the SD-2 series of subs coming out very soon by Sundown and Ascendant Audio has the Arsenal series subs, both of which are rated at 500wrms or the SA series or DC Audio Level 3's which are rated at 600wrms and a pair of any of those wired to 4 ohms on that amp would be a great match and not be quite as stressful on the electrical either. Do you already own the amp? If so then those are some good considerations, if not then the DCON's or X's would be great on a smaller, less expensive amp. There's so many brands and a multitude of equipment offered by them that it can be somewhat overwhelming when you're looking at new equipment and don't have direct experience with it. It's even tougher when someone recommends something to you that you nor anyone you know have ever used or listened to. I stress though that no one on here is going to recommend anything to you that we ourselves have either not owned, used, listened to or had some experience with and not know it to be a good, dependable, worthwhile piece of eqiupment.