"Experience will depend on ability to get a good fit."0.5 starson by jimwardjr
Pros: Sound quality, durability
Cons: Fit, comfort, price
Summary: I have been looking for a bluetooth headset that I could wear on long runs and during weightlifting, but would also allow me to answer occasional calls while working out. I use a separate headset (LG Tone+) for other usage (office, car, airplane).
I read numerous reviews, from both professionals and end-users, from this site and others prior to purchasing the BlueBuds X. Based on those reviews, I knew that my satisfaction with this product would depend almost entirely on my ability to get a good fit. That prediction proved true.
After 3 weeks of using the BlueBuds X daily for running and lifting, I never could get a good fit. I only tried the under-ear mode, because I need to use the microphone occassionally. The BlueBuds did not completely fall out of my ears, but they never had a tight fit and kept getting looser during exercise. I was constantly pushing them back in my ears. The loose fit allowed too much noise, which was especially annoying at the fitness center. My cheap SkullCandy wired earbuds provide a much tighter fit, but wired earbuds are a pain to use with my Lifeproof case. Since I went past the 15-day return period from the retailer, I'm stuck with Bluebuds, which I will try to sell.
Considering the BlueBuds to be a sunk cost, I then purchased the Motorola S11-Flex HD headset. After using the S11 for a week of daily workouts, I am completely satisfied with the S11.
If you can get a good fit, you will likely be very pleased. If you do not get a good fit, you will be dissatisfied and have an expensive, useless headset on your hands. Unfortunately, there's no way to test the fit without buying the headset.