I wish I knew what to tell you about which remedy is right! I've had 4 noises in my head (after a head injury) and at first, I took t4 for cochlear damage. That got rid of the worst noise, and it did it in only 2 weeks or so. I didn't feel like any of the other remedies would address the other noises, so I didn't order until recently. I ordered t2 this time, because they said on their home page that the t2 type noise starts out hollow, and mine had done this. I doublechecked my detective work with a medical intuitive that i work with. T-gone does say that the most common by far is t4. I ordered 2 this time - t2 and t4. I'll take them separately, so that i can tell which, if any, have an effect.
I did some research, from their site, of their ingredients, and some of the remedies have the same ingredients, so at least I can help you narrow it down by getting rid of duplicate remedies
Types 4,5,9 & eustachian tube all have the same ingredients.
Hyperacusis formula has the same ingredients as above, but adds a few more.
Types 1,2,3,6,7 all have different ingredients from above, and from eachother.
Good luck! If you order any, can you let me know if it helps?