Happy with it so far. Hasn’t been a week yet but so far only had to charge it that first time. Used multiple times a day.-Thinner/lighter than other versions.-Has less settings but I don’t care.-Does it’s job.-Would like it to have it had come with power plug adapter.-May have been willing to pay a little more if came with sanitizer or extra brush heads, but oh well.This new version I can confirm did have straight metal bar stand for the brush (which I wanted)I only purchased this because I wanted a decent sonicare that didn’t cost too much after my smart bright electric toothbrush died. I had trouble deciding how to replace it, as I liked it a lot other than it was sooo difficult to remove the brush heads and that is how it broke. The smart bright brushes are great and my uv sanitizer charging stand it came with still works. I would have purchased a new brush itself if they actually sold one! Since they do not, I don’t think saving money on a smile bright is worth it, if you have to buy the whole thing every year or so because it will break eventually - the brush head part is plastic. Sonicare uses metal, much easier to replace and clean daily.I attached 4 photos for anyone struggling with what to purchase and why as I found a lot of descriptions and reviews unclear.Photo 1 shows:-on bottom left, my husband’s over 10 year old, Philips sonicare HX9160. Still works great. Has several settings. Is heavier and battery may not last as long as other options but it’s also well used. Sanitizer that may have been purchased separately, doesn’t seem to work as well as the smile bright sanitizer but still does good enough. -Above it is off brand replacement brush heads that work well for it. These do also work with this new sonicare version here because both models use the straight metal brush head holder piece.-middle is the smile bright, sanitizer charger that I kept but already got rid of the brush sorry! It does not charge or hold any other model that I’m aware of but I kept it in case I got a replacement andor if I still want to use the sanitizer. Above the charger, is the off brand brush heads that will work with that model. I like these bc they have tongue cleaner on back of the heads, however difficult to keep clean and as stated, the heads are so difficult to remove by design (original and offbrand).-far right is this new sonicare HX364W3. It seems like a good deal and will last longer I’m sure based on the metal vs plastic comparison for holding the brush heads.Photos 2 & 3, just thought someone may appreciate actually seeing why certain heads only work for certain brushes. The left brush head is wider and the bottom and has the tongue cleaner. It is for the smile bright. If you zoom in on the first image, the package says it works with certain brands and models but no idea if that is accurate. I just j own it does work for smile bright and not for sonicare versions I own.Photo 4 just showing the difference between an old sonicare model and this new one. These two models both have the straight metal head stand that the brushes attach too. To me, this is better. Again, both of those brush heads work for both of these sonicare models I addressed. (Be aware that a few other models I do not own have a squiggly metal bar brush stand instead and I do think these heads work with those).Hope this helps someone else confused