You can get a Kicker zx750 (usually birthed ~900) for about 200 of ebay new. Or for about 250 you can get a zx1000 which usually comes in at 1100. Kicker makes great and afordable underrated amps.
i have mine ported @ 31 they sound great. it depends on the music you like though. if you listen to music thats is long drawn out bass (rap), then go ported. if not you will like sealed