Well, I didn't see any smartphones with physical buttons at 2...no...3 different Verizon locations, so if they do exist, they were not on my radar.
As for Android vs iPhone, I had an Android for 3 years- about as long as I've had my iPod Touch and iPad2. I kept running into situations where the Android environment wouldn't let me do what I wanted the way I wanted...sometimes, not at all.
For example, a buddy of mine and I went to a concert, and both took videos. His iPhone worked like my iPad: it let you send long movies by asking if you wanted to break them up into chunks. It was even an auto-prompt. In contrast, my phone simply wouldn't let me send them. The was no menu option. To send said large movies, I first had to download them to my computer.
Or, while visiting my favorite forums, my Android displayed all kinds of oddball behavior: on one site, the cursor jumped randomly. On another, it routinely placed the cursor "under" the virtual keyboard- even as a touch typist, I found this incredibly annoying.
I found these issues- and others- early in my Android ownership. I asked Verizon tech support about them in person, since they were happening pretty much always. They saw the issues but were unable to correct them, returning my phone with a shrug.
Now, I won't try to lie and say there are no issues with iOS devices. But, except for one (an issue with the Notes app), none has annoyed me the way the Android did.
At the very least, it will be child's play synching all of my mobile devices, now that they're all running iOS.
Besides that, I really don't want a bigger phone, I wanted smaller. The Android I had fit awkwardly in my pockets as it was, and the iPhone's belt mounted case is uncomfortable enough despite its smaller sized. A bigger phone was out of the question.
Even though that means I may have more issues with the touch screen- which, so far, has happily not been the case- I plan on using my iPhone as a phone first. All that other stuff? Primarily on the iPad or my iMac- the phone is an online device of last resort.
And while headphones don't bother me (I have at least a pair of them right now), I really haven't been all that impressed with the Bluetooth ones. Several of my associates have them, and often, conversations with them are...problematic. Odd acoustics, extraneous noise...why its happening, I can't say. But since the phones they're using are pretty state of the art, that almost has to be the weak link.