The Hyper EVO 212 is, of course, a great option for the price. I've heard static pressure fans are also great. I'm open to suggestions for fans on either the Dark Knight II or EVO 212.
Right now I'm leaning towards the Dark Knight II with the fans I linked because it's in within my budget and almost all reviews I've read come to the conclusion that the Dark Knight II is better. If you strongly believe the EVO 212 is that much better, then please convince me!