1. Advanced Bionics 90k with Harmony on Fidelity 120 S.
2. Yes, I have no idea how many times since activation. I was activated in 2006.
3. Yes, I had some mild dizzines that felt like drunken spells about 1 to 2 months after surgery. They passsed shortly and never returned.
Like others have told you, whatever device you pick you will need to work at it. Even if it were a total cure, you'd need to work at it. You are learning to hear after all.