I used a special irrigating machine, called "Gosslan Hydro Pulse,". It's expensive about $80.00-$85.00, but works exceptionally well for keeping everything clean up there the results are EXCELLENT. I used to have the same problem with ear pain and clogged feeling from using the Neli -Med bottle, so much so I hated doing it, I now only use that if I am traveling and its not convenient to bring the machine.
If I do use the bottle, try doing it VERY slow, alot of the times, you are doing it too fast, and as a result you are shooting up the water before it can drain in the throat and instead gets in your ears/tubes. Always try to keep your mouth open at all times, and lean forward. ALSO-try chewing MINT gum after your sinus rinse, really helps open up and move the solution out from your sinuses.
LittleLab4CF, please be careful with adding REALLY HOT water to your nose, even though it feels go for you, just remember the nose is very delicate tissues, and can cause worsening inflammation or cause a bad nosebleed. I use very warm water.
Also, CFers I HIGHLY recommended using only USPS grade sterile water, after talking with my Dr. He said that was a better idea then the distilled water, As we can not know for sure where or how really that distilled water was treated.
Especially since I got /had the mycobacteria and abscesses- Only sterile water will now touch my nose. Ever since then my cultures have been clear (PRAYING)
Oh, and I buy the little packs of salt for the Nelimed or arm and hammer, again, its pharmacy grade, so no worries contamination. I have also tried xylitol USPS grade power solution to add to the rinse, Works REAL nice, soothes and has a natural antibacterial activity in the nose!