After breaking several much more expensive sets working out in the gym (a heavy dumbbell or something would snag the cord on a down curl or other movement and tear the wires right out), I just started using the free pair. Surprisingly, I haven't torn up the white set, but I think much is due to the fact that all the nicer sets I had owned had cords that are wayyy longer. All that extra slack is bad in the gym. Another surprising thing I happened to notice over time is that after about 50+ hours of use, the free white ones sound much better than when they came out of the box. They don't sound $200 better, but they sound better than any of the cheapo Skull Candy type junk (at least straight out of the box) and the remote and mic on the cord is always nice.
Even with better headsets, it doesn't really matter in the gym as the loudspeakers are blaring crappy music and weights are continuously clanging. Sound quality is not discernible when there's so much outside noise going on.