Review title is the best kind of toothbrush [SEP] I have used the rechargeable sonicare for years. I got this one for trips to pare down on what I have to pack and now I much prefer it since the batteries last for months and I don't have the charger taking up space. The battery cap can come loose a bit and allow water and paste to get into the battery area, so I am always checking it and giving it a little push back in.