When I originally chose iPhone for the first time, widely available Android devices didn't exist, I think the best Blackberry at the time was the Pearl or the Curve? and Windows Mobile 6 was really horrible.
Why did I chose Apple again? Given the current competition?
-Personal history of user satisfaction
-Excellent build quality of the phone
-Plays pretty well with Google services
-Apple's legendary customer service and support
-and I'm already invested in the Apple ecosystem (MacBook Pro, iTunes, iPod)
I don't like Windows 8. and I have no other serious vested interest in the Windows/Microsoft ecosystem.
I've used Android phones, and while fun at first, I find over time they don't keep my attention or affection.
I love Blackberry, and I think BB OS 10 could be one of, if not the best mobile OS on the market. Shame their hardware has been seriously lacking. The Z30 could have been the one, but it's too little, too late. If the Z30 had come out in March instead of the Z10, I'd probably have one, and be on Crackberry right now instead of iMore.