I made the switch from simple phone to smartphone last September. I was doing it for work and I went with Samsung Galaxy s 3. What do you use?
8 out of 10 "kids" in my family use Droids, the other 2 use iPhones because he's a Mac video producer. The wife and I use dumb phones but at least we don't say "Stupid smart phone" like our kids do. My oldest son uses his Droid to do remote tech support, quite the advance since I was "on call". I try to find a canyon to hike where my phone won't work half the day but it's getting harder.
I'm an Android user. iPhone is cool, and they do so much to out-do android, but android is just as good.
