Behringer SD251-CK écouteurs intra-auriculaires de monitoring
The foam tips that come with the IEMs don't isolate the sound enough for me (might be okay in a quieter environment, but we play particularly loud), meaning I have to push the volume of my click track basically as loud as my headphone amp will go, and so still come away with ringing ears after each practice and gig as a result. The tips themselves I also struggled to get to stay in my ears, and they seemed to disintegrate after only a few uses. The cable that wraps over the ear also is a bit on the firm side, so can rub against the top of my ear after extended use.
That said - they otherwise seem well made and I have used these multiple times in a very loud live environment, and they're fairly reasonably priced, so might be worthwhile in a quieter setting if you're prepared to replace the tips (which is what I was trying to do when I started writing this review...)