[shiroiushi]

That's not the problem I found. My problems were twofold:

1) The Braun toothbrushes are just nasty. No matter how much I rinsed them off after every use, they collected a bunch of nasty crap in the holder. My Panasonic toothbrush never does this.

2) The Braun toothbrushes only work on a single voltage, because their charger sucks. You cannot take the charger with you when you travel between continents. Any decent modern electronics these days don't have this problem. My Panasonic toothbrush's charger works with 100-240V, 50-60Hz power (worldwide), and this is a model that seems to only be sold in Japan.

Also, the Braun toothbrush is huge. My Panasonic is much more compact.