I have been using mine for the past year and it's AMAZING what a difference it makes! The thought of not using it is equal to the thought of taking a $H!T and not using toilet paper after. My allergies have always been bad but they're far better since using the Neti Pot. I'm pretty anti unnecessary medication so this has been a wonderful addition to my daily showers.
Also, I use a sports top water bottle instead that way I don't have to worry about sensortard breakage and I can toss them out once in awhile.