The ie8/80 is wonderful place to end a basshead iem journey if that's what you're looking for. The ATH-PRO700, V-Moda Crossfade LP, and Denon D2000 (the latter not portable and discontinued) are known for being great over-ear options. The ASG 2.5, RHA 750i/T10i, or HiSound Wooduo2 are other superb options, the latter of which I'd highly suggest for an utterly earth-shattering experience (I've actually never tried the Wooduos but the reviews in comparison to the ie80 make it apparent). The fx700 is reliable through amazon, and yes, the ie80 is sketch on amazon or ebay, so make sure you can either make the return or buy from the for sale thread here on Head-Fi (also, on head-fi they go for reaaaally cheap if you can wait for one to come up - like 175-250 cheap). Past those suggestions, a couple searches around these parts and a skim of lJokerl's 336 IEM's compared thread should get you somewhere. There are quality and worthwhile options abound.
Oh, and sorry for your wallet.