... Is the second set ...

The Panasonic brushes we have a three-member family for over 5 years now. Mitz of Rein8igungsleistung I was just like immmer very pleased with the replacement price for replacement brushes. Battery is absolutely sufficient for the serial use by three persons, the charging station can be broken down with a handle and clean - well thought out.
In continuous use is the life of a "brush" depending on use 3-4 years before the device gives up the ghost - nice if you then just hand a replacement. Would I buy again at any time for the price, clean processed and cheaper in maintenance than the competition.