Sorry your is so much pain. That has to suck big time! I have some of your problems, but way less painfull. I too have a hard time sleeping without tossing and turning and usually pain wakes me up and I roll over, Headache's most of the time with a few turning into migraine's, ear rushing sounds, unusual head pains, and feeling yuckie most of the time.
As far as Doctor's. It depend IMO on the Doctors, how big the tumor was and it's location, how long it has been growing and pushing on the nerves, how sticky or hard it was to get off the nerves, if any damage was done during the operation, and Basicly I want to say the experience of the Surgeron's.. IMO two years out you shouldn't be having that much pain. The only thing I can think of is keep trying different doctor's till you get some results. I feel like a wimp compaired to your suffering.