I have seen this question or variations of it on this forum. I find that interesting in that the bulk of the participants here are hearing aid wearers and have maybe tried 1-3 different manufacturer’s product. Also given that no two hearing losses are exactly alike, one persons opinion will probably not apply to someone else. BUT, that question came up on an audiology forum recently and here is what a very respected Audiologist had to say:
Each has their strengths and weaknesses, so it depends on what their specific needs are.
I feel Phonak is best for performance in BGN.
Widex is best for musicians, people suffering from tinnitus, and very mild losses.
Resound has given me the best results for custom rechargeable aids.
Signia has some special features that are great for issues regarding occlusion effect, called “own voice processing.”
Starkey has always been great on custom aids.
Oticon is good overall, but doesn’t, to me stand out in any specific area.
Just remember that when asking advice on an open forum, your answer can be worth exactly what you paid for it.