I never realized I could be so passionate about a toothbrush, but I could never go back to a manual toothbrush after discovering this gem. Sonicare was recommended to me by a friend and coworker a few years back, so I took the plunge and bought one for myself. I immediately loved how clean my teeth felt and have never looked back. My now-husband used to use a different type of electric toothbrush, but I got him to switch to Sonicare and he's happy with it as well. The two pack is fabulous because we each have our own handle for every day, but we can pack up two heads & one handle in the travel case. I'm not sure how long the battery lasts without requiring charging but it's at least a week of 4x per day use.
I think the best testament to how great this brush is, is that when my husband and I finally got around to finding a new dentist (we were both fairly overdue for cleanings), the dentist said our teeth were amazing and we were like walking advertisements for Sonicare!