Hi Mega,
haven't used the Neti Pot, but really like the Sinus Rinse version. I just make up my own mix with Seasalt . Soothing if your sinuses are all plugged up, and gets a lot of gunk out in a hurry. Just go easy on the pressure and keep your mouth open, or your eardrums will complain. Not sure if this will soothe your itching, but may be worth a try.
For some reason a 3% peroxide ear canal treatment sometimes helps me with eye problems:
Rest head on its side, use dropper to fill upside ear canal with 3% peroxide, put warm water bottle over ear and let soak, until fizzing slows. Rinse well. Do the other. Feels actually quite good!