I have no problems with this model. I was a little leery because of a few of the reviews I had read mostly regarding the size of the water reservoir but I see no problem refilling it. I purchased it on my dentist recommending me getting one. I’m very happy with it, it serves the purpose
Very nice compact irrigation device. Much better than flossing! More effective and easy. I’ve also used the larger full size units which do hold more water but this model holds plenty of water for me and takes up less space. I would definitely buy again.