In reply to jazzyjackson:
I've just bought a Wahl one, cheap and cheerful but gets decent reviews. I thought it was worth a shot, although as they say, 'buy cheap, buy twice'. I'll try and remember to give a review here after I've used it a bit but I know that doesn't help you much at the moment.
Interesting reviews of some of the options here:
https://www.cnet.com/news/the-best-massage-guns-of-2019/#listicle-fcb0acaf-...
There are several Wahl models, but the one they recommended here is what I went for.
Post edited at 22:42