Review (5/5): Best value out there
I had an old-school sonicare that I loved. Even my dentist/hygenist noticed a huge difference once I started using the sonicare, my teeth were whiter and she found she did less scrapping and cleaning than her other patients. When the battery died after 4 yrs, there was no question that I was getting another one. These new ones are great, they are more powerful than my old brush, and the smaller angled brush head actually seems to work better.
I picked the e5500 over the e7300 for several reasons. Both have the smartimer and quadpacer features that I depend on, and for the extra $10, you only get a recharge indicator on the e7300. I don't need that, since I recharge it every couple of days, and I appreciate the extra brush head that comes with the e5500.
FYI, if you've never owned a sonicare before, it takes a while to get used to, but you do get used to it. And you have to unscrew the brush from the base and clean both parts regularly (I do about once every week).