1. if you have a medical device and specific medical needs, please don’t ask us for things that satisfy rigorous medical standards. your doctor should have the training (and is certainly accountable) to identify what kinds of features you should be looking for, and what devices actually achieve a standard of reliability that they would feel comfortable with you using and relying on
2. i don’t know what “youngish” means, and the ambiguity is making me really nervous. what do you consider “young”? and what’s “youngish”? are you 33? 25? 14? from different perspectives, these are all potentially “young-ish”.
3. please, please don’t bring these kinds of high-stakes questions to reddit. there are idiots floating around on here just waiting for an opportunity to use chatGPT or something to give you dubious advice for upvotes. it’s fine for getting lots of perspectives of laypeople, but if your life depends on this, talk to someone whose authority on the subject is earned.

you don’t need to set up a formal appointment with your doctor. just email or call and ask them what they recommend. they know your medical issues and history, and they know things about you like your age. if the question is simple and straightforward, they’ll just tell you to go with whatever is on the market; if they want you to keep track of very specific metrics and they really want those metrics to be accurate, then maybe they’ll tell you that they’ll look into it and get back to you. there’s no way you can lose by asking your doctor.