Review (4/5): sonicare xtreme
I am really happy with it. This works just like the Sonicare units with the charging stations, except that you change the batteries. It uses the e-series heads. It does not have the reduced speed on initial use which may be a problem for first time users of sonicares. The bottom pulls off to put the batteries in. The edges that you need to hold onto to remove the battery cover are a small making it a bit difficult to remove the cover.
The only downside is how fast it goes through batteries. The information on the product does tell you that it will go through the regular batteries quickly. I was getting only 3 days or so which I thought was little too fast. Lithium batteries last several weeks when the sonicare is used by one person.
I give it 4 stars because of the battery compartment cover and the battery use. If you are already using a sonicare type toothbrush this is one to consider