This review is from: Oral-B Trizone 4000 Electric Rechargeable Toothbrush Powered by Braun (Personal Care)
Customer review from the Amazon Vine Programme (What's this?)
There are several different models in the Oral B trizone range, and the 4000 model comes in roughly half way through the range, offering 4 main features: a Daily clean visible pressure sensor (a red light illuminates near the top if brushing exceeds the recommended pressure to avoid aggressive cleaning) with Gum care settings, Whitening mode (to polish the teeth) & Sensitivity settings. ( which basically operates the brush at a loser speed)
I find that with a family of 4 all using it twice a day then it needs to be kept constantly charged, but there is a little to fault here.
I feel the 4000 model is probably the best you need to get, with the 5000, 6000 & 6500 models adding wireless smart mode, Deep Clean and a Tongue Cleaner respectively, but realistically I feel the 4000 has all the features you need.
Replacement heads may seem expensive, but shopping around reveals many offers and discounts.