I got this one 2 months ago and love it. I’ve worked on some problem areas and find it comparable to a real massage. It also does a great job on the general “it feels good” pre or post workout massage. I love the fact its cordless (my last massager had to be plugged in). I was having a hamstring issue at the time i bought this that was really acting up on a couple multi hour car drives and I was able to take this with me on a long road trip which really helped. It runs for a week or so on a charge for me. Can’t wait to take it to a race!
Can’t comment on any actual science but this definitely scores 100 on the feels good/seems to help non scientific test.
https://www.amazon.com/gp/product/B081D86VL2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1