I'm a hardcore smartphone enthusiast. I've had a huge number of new smarphones over the last five years. I maintain accounts with AT&T as well as Verizon. I am currently using an iPhone 4, Samsung Captivate, and Droid X.
Of those three the Captivate is far and away my favorite.
The Droid X, is in second place, and iPhone a very distant third.
I have not had one single problem with it. Fast, lag free, with some optimizations I performed (it's not rooted) I could not be happier. The major reason I'm about to buy a new HTC Inspire 4G from AT&T, is that I've always had really great call quality and less than one or two dropped calls per month. I've also been waiting for this phone to come out in a GSM version.
I had an EVO, really liked it, but the network coverage in my area was horrible so after the trial period I returned it. Everything about the HTC Inspire 4G is ideal for me. I spend a lot of time on the web as I travel and although I carry a laptop, it's so much easier to use a smartphone in airports etc.
The bottom line for me, is Android IS my OS of choice, and I have no intention of leaving that platform. There's too much fun, too many ways to customize the phone and it's only getting better