I think I used those briefly. i stick to some Crest packs, not sure which ones, but you can get them at a decent value in 4 packs at Target for maybe 5 bucks.
I have noticed that toothbrushes have become insanley expensive in recent years--there is, honeslty, nothing new, nothing remarkable, nothing worth your money in the toothbrush industry.
seriously.
When I started to think about it, you need something that is abrasive, that has some stamina, that disturbs a rather non-uniform surface in a short amount of time, and holds up enough to do it within 10-20% effectiveness over a decent amount of time.
...this is just about every toothbrush that money can buy.
Like a good camera, the success of the output is 95% dependent on the skill of the user.
when you start looking at consumer products like this (toilet paper, paper towels, soap....), and you realize that the $2-5+ premiums that you are paying for the "elite" brands are soley paid into these brands' ridiculous advertising budgets...you start to think.
really, does it matter that my tootbrush's arm bends ~15 degrees inward, or was it designed that way simply to "Stand out from the competition; let's fill in the details later?"