I bought a set of UE SuperFi Studio 3s about 4 years ago. I've been very happy with them, but over the last 6 months, the cable connection for the left earphone has become very loose. I tried the right cable in the left earphone, and it's still loose... so it's not a cable problem, it's an earphone problem. I called Logitech/UE customer support, and they offered me the 50% off coupon for the next 30 days. He suggested the SuperFi 5 or the UE 700. Both list at $149, and with the fact that the 700 is a dual-armature, I'm inclined to go for those. I don't like the fact that the "metal paint" peels off of the 700s with sweat, though.
I have been using my SF3s for general listening w/ my iPod, and for monitoring recordings at concerts (recording taper-friendly bands from my seat, earphones are plugged in to a Nomad JB3). In the last six weeks or so, I've started running, and have been using them for that as well. That's been where the loose cable issue is the biggest problem - it's tough to reinsert the cable while you're on a treadmill.
What's the best pick between these two? Or, should I look elsewhere within the Logitech line, or go with something else entirely? I like the price point of $75 (50% off either of those UE pairs).