I really can only vouch for the S4i's since I've had them for 4 years myself and haven't tried the others (because my S4i's haven't died). My first pair was the standard Image S4 and it started fraying and required me to put some heat shrink tubing on them, but they had the "L" connector instead of the straight plug the S4i has. Then they got blown off a boat while I was out on the lake, but that's another story. I then replaced them with S4i's and haven't had an issue.
They also have the S4i (II) now that is supposedly more durable and has a flat cord for tangle resistance.
The sound quality is excellent (to me) and it's great on the highs and mids. The bass is great but if you're a bass head you might not be completely satisfied, but I think it's perfect right where it's at. It can be tweaked a bit and in some songs it kicks pretty dang hard. I just know there's some people that don't care about anything but the bass, and go buy beats because they look cool and have a logo on them. :roll eyes:
Previously I had the Apple In-ear headphones and went through three pairs before I gave up on them because either one would stop working or the tweeter would go out in one and the sub in the other. They were just poorly built.