For the cost, also consider durability. Not sure about the Shures, I have a pair of Super Fi Pro 5 UEs and I'd have to rate them so-so for durability.
On the positive side for the UEs is that the UE's are modular. The cable can be replaced, each ear bud can be removed and replaced, etc.
On the negative side, I had packed the UEs in the seat pocket during a plane flight and pressure from my knee on the externior of the seat pocket caused one of the ear buds to crack at the right angle. It will cost me nearly as much to replace a single ear bud as it costs for a new set of Super Fi 5.0, so I'm not sure what advantage modularity really gets you.
I'm not suggesting UEs are cheaply made because there's not a product made that can necessarily withstand abuse, it's just that my own experience with them was a little negative in that I wish the plastic parts of the earphones would have been a little bit more rigorous.