Equate Polaris Deep Cleaning VibraClean Vibrating Toothbrush, Soft, 2 Count

So far not a single problem with the dozen or more we've bought in recent years. The bristles are gentle, yet remain straight far more than any brush I've ever used. I find these "disposables" CAN easily accommodate replacement batteries, if you're courageous, strong and dexterous enough to open the black end and snap out the white battery holder inside. Of course if you run the alkaline battery down too far and leave it a few days, like all alkies it will presumably leak and destroy the brush. I use rechargeable NiMh batteries and though somewhat lower voltage (thus gentler than alkies) they seem to last longer. Eventually the wire inside breaks, but I can typically use the same brush for a month or two. First the alkie it comes with, then two or more recharges of my NiMh AAA. Several dentists have commented on how my teeth don't really need much cleaning and my gums look good. I often brush for a longer time, and occasionally only at bedtime, so those comments always surprise me. Though I'd not want to use and toss these even at Walmart's great price, with the rechargeable batteries and excellent gently sonic cleaning this is by far the best toothbrush of my life. Highly Recommend if you can swap batteries.