@bunnybear, I'd just like to say, I admire you for going ahead and trying surgery! You surely are trying to help yourself.
I'm thinking that all aides, surgery, implants are so very individual for each one's needs. I'm sorry not much improvement after all you did. As for the tinnitus...try to hang in there. I've had it since I was in my 20's...I thought I would go crazy. I can tell you, it will fade in time, and you'll likely get so used to it, you won't know it's there. I'm aware, I have it 24/7, but it doesn't bother me at all. It does seem to be louder when I'm sick with a respiratory illness...probably has an effect on hearing. So the tinnitus kicks in, on the sounds I'm not hearing. This entire hearing loss thing is beyond complex, and I sincerely feel for all of us.
I'm kinda thinking, maybe your tinnitus will subside, because you say you didnt have it before surgery. Hopefully some nerves that may have been disturbed during surgery will/may heal. My very best to you!!