My wife is an RDH and she got us this one www.amazon.com/dp/B00HFQQ0VU it’s expensive but I love it - ever since I started using it I have less build up (according to my dentist) and my gums don’t hurt at all. The first few times I used it it was also very gross because whatever tiny food particles it picked up from my gums smelled very bad.
The only word of caution is if you have prosthetics/crowns/dentures you need to select a tip that is made for that job. The default tip might not clean right or even break some of the smaller parts (the pressure level can be adjusted so it depends on what can you tolerate, but over time you’ll be able to tolerate more and more pressure because your gums will heal)