Thanks for all the suggestions.
However, none of them succeeded.
First, my favour Beltone. For analog HA in Canada, there is only one model available, it is called Linear P. However, I felt the sound was too loud in loud situation, but speech is not clear in quiet situation. Beltone said I should not notice the difference between Linear P and CSP-II. However, I feel big difference in hearing speech. There is no Viking model in Canada.
Secondly, Ergo from Oticon.
I tried the BTE and found that the sound was too sharp and made my ear very uncomfortable. I also could not hear well with speech. Maybe I think this is due to the sound is too sharp. The dispenser made it lower and then I felt I could not hear clearly for the speech.
I tried Phonak BTE called Pico Forte. It is worse than Oticon Ergo. I also returned it.
Hello all, what other models I can try?
In my experience, I have tried Starkey Accent I in 2004 for one year. It was good for three months and then they were broken. After they repaired the hearing aids, they were never as good as before. I remembered I tried to put a plastic plug into the vent and it sounded better, but I felt very uncomfortable and later I just took it out.
My friend, should I give up or should I try something else. Should I try Starkey Accent III?
I also have tried Beltone ONE,Mira, Resound Pulse, Bernafon Brite, Flair etc.