Originally posted by: Gurck
What? It's true... Audigys resample everything that goes through them to 48khz. It's still a good card, very clean and supports environmental audio and offloading sound processing from the CPU in games/apps that support it. I have one and am happy enough with it, but got a Chaintech av710 in addition to it for listening to music, since this is where the Audigy falls short. I'd get an M-Audio Revolution if I could go back, however, and am considering getting one regardless... And lack of bass is only half the story behind ipod sound quality; the cheap, noisy headphone jack circuitry is the other. Further yet, if he's like most people on this forum, his music is comprised mostly of 128bit mp3s downloaded from p2p networks, ripped by random people, most of whom had no clue what they were doing. The most budget pair (E2cs) would be fine in his situation, the 3s are overboard unless he plans to upgrade his sources.
Well, I had a lot of 128kbps mp3's, until I got the e3c's. I could hear a definite difference in quality in better ripped mp3's as well as just realizing that 128CBR of one song just sounded worse than 320CBR of another song. My shure e3c's have actually started me on the right path, since my music sounds noticeably better

. I've used a couple iPods with my e3c's, and it's pretty much the same, except for a little bit on the low end. The iPods also sound a little bit drier, but my iRiver sounds more full and fun.
Also, this is TOTAL hearsay, chuckywang, but...
the er6i's are supposed to be on a similar level w/ the Shures. However, they're much more bass shy and analytical than the shure's. If you're looking for fun in your music, I would probably go e3c, but I have a totally different source than yours.
If you want more informed opinions contributing towards your decision, I would recommend taking a trip to
www.head-fi.org and checking out the headphones section. It'll really open your eyes.