THIS. Depending on your situation it may be important to be able to make adjustments. Just turning everything up can be particularly annoying in restaurants etc. Get a specialist's opinion on what to buy based on actual testing of your hearing problem.
Also, hearing changes. A programmable aid can be reprogrammed within a certain range to keep up with changes,
It starts with an audiogram. You have to know what’s really wrong before you can do anything.
When I was working in this area, we had a surprising number of older people whose main problem was a bad buildup of wax. We sent them for ear cleaning before we even attempted to assess their hearing loss.