I got my BeatsX last week and so far I am pretty happy.
I have had several bluetooth earbud sets over the last 3 years and these are overall these are the best I have had.
I used to have the Plantronics BackBeat Go 2s. They worked well, though the buds were a little big. I lost those to the pool. Leaned over and they fell out. Dried them out, but lost the left earpiece due to the water damage.
I then got the Jabra Rox. I really liked those. I loved the magnetic clasping of the buds and unlike the BeatsX, they went into sleep mode when clasped. However, I think this was a fatal flaw. It would seem that the mechanism would fail and the buds would never come out of sleep mode. Happened twice. So, while I think that would be a cool feature on the BeatsX, I don't know how it might work over time. Yeah, my iPad has done it for years without fail, but it doesn't take the jostling and beating headphones do.
I then got the JBL Everest 100s. Still have them as a backup. Not great for noise isolation, but do have good sound. Not sweat resistant either, but have held up very well. Hopefully this will be true of the BeatsX.
And, then for my birthday, as a surprise, I got the PowerBeats3. Loved the sound, and even though I was skeptical about the over the ear design, I really liked them. But, the first pair suffered connectivity issues after 3 weeks. So... I got another set. 6 weeks later, they stop charging and won't turn on.
So, now I have the BeatsX. So far, so good. Love the W1 connectivity like the PowerBeats. Love the lightning port (one less cord to carry). The cord is a bit long and gets in the way at some points when I work out, but overall, the sound is pretty good, and the noise isolation is excellent with the right tips.
I do have a question.... Has anyone tried the "MagSafe" lightning adapters for the iPhone sold on Amazon? With the open port on the BeatsX and PowerBeats, I am considering using one of those so that the port will be closed during workouts and it would be easy to connect for charging. You can get one for $9-14 on Amazon.