If you want, the Obsidian Audio 15 will perform great off a thousand watts, I'm sure you'd be plenty pleased with the output. For a matching, NEW amp...
Meh, it's hard to find quality amps, NEW, and at a good price. If you're looking to amp your speakers as well as your sub, I'd recommend this eD 9.5.
Elemental Designs: Car Stereo, Home Speakers, Electronics for affordable, and quality, at a decent output. They have them available in b-stock on their forums:
http://forum.edesignaudio.com/showthread.php/elemental-designs-b-stock-car-76593.html
I use their 9.1 mono amp for my sub and it's awesome. Also keep in mind they are rated at 12v. and underrated at that. So with voltage at 13+, you could probably expect closer to 1,000w
Also, there's this Sundown SAX-1200:
SSA Store - Sundown Audio SAZ-1200D Amplifier
Expensive, but definitely quality, and underrated as well.
I guess I'm just cheap when it comes to quality amps, I'm really a used guy.
There are a couple budget ones you can go with, that do rated and take some abuse from MB Quart, and Audiopipe. Not the prettiest things, but they do work well.
MB Quart ONX1.1500D - ONYX Class D Monoblock Car Amplifier/Amp
MB QUART ONX1.1000D 1000W Mono D Amplifier : ONX11000D : $158.95 : VMInnovations.com
Audiopipe APSM-1300 2000W Mono Mini Amplifier : APSM1300 : $108.95 : VMInnovations.com
AUDIOPIPE AP10001D 1000W MONO Power Amplifier : $143.95 : VMInnovations.com
Audiopipe AQX-1200.1 1200W Mono D Amplifier : AQX12001 : $208.95 : VMInnovations.com
VMI is a supporting vendor on this site as well. They always have the best prices, and free shipping. And if you look on their forum, you can probably get a % off discount. Also, have you already purchased your wiring?