I’ve used a couple of pairs. I tended to use them during long exercise period and whilst they seemed to need longer for me to warm up, I did feel like I fatigued less. I didn’t measure anything though and didn’t do any side by side comparisons of recovery etc so don’t know if there’s anything to support the claims!
From my experience, it’s worth paying for the better brands. The cheaper ones lose their compression tightness after not that many washes versus the better ones. My best ones are from Pro Compression (via SportPursuit sale…. worth keeping an eye out there).