I've been using this for years and kept buying the same model due to price. It did its job, my gums and teeth have been fine. A waterpik is a necessity to your oral hygiene. Theres only two settings which is high and low. I've never used low because I needed the water pressure. Now I used the ultra water jet and I dont think I can come back to this product. The cordless is childs play compare to the ultra. I do have issue cleaning this model. I would have to soak canister with alcohol and run the product, hoping to get rid of whatever residue is left behind. It does accumulate mildew if you don't clean often.