The version before this was great, and I'm very disappointed with this product. First off, the charger... Why on earth did you guys go back to that bulky pokey thing? The ring from the last version was so sleek and nice. Second, the pressure sensor. I get that brushing too hard can cause damage, especially to sensitive and exposed dentin. HOWEVER, it's really irritating that this toothbrush basically stops brushing if too much pressure is applied. There are some lingual surfaces that are difficult to brush, or even reach, without applying more pressure. I couldn't finish brushing my teeth with this unit, because it wouldn't brush the lingual surfaces. The visual pressure cue was nice, and new settings in the timer are nice, but overall, I'm pretty disappointed with the changes made to this brush. I gave the one I got as a sample away two weeks after getting it. I would never buy this brush, and I wouldn't recommend it to my patients either. I'd recommend the generation before it.