We’ve got the Theragun Elite in our household. Other half did a load of research and the she decided that it had the best reviews. Think it was about £300.
I was sceptical at first but having used it for the last month, it really is fantastic. I cycle most days and using it on my legs really sorts my muscles out so that they feel relaxed for the next day. I don’t get that ache/heavy feeling in my quads anymore.
Also helped relieve a knot I had in my shoulders/back.
She does CrossFit so uses it daily too. I’d happily but another one when this one packs up. In terms of the brand itself, I don’t know whether you’d get the same results from a different brand (possibly/probably). There’s probably a You Tube video somewhere comparing them all…