Blackberry. I realize I may catch some heat here but I was a Blackberry user before I was given an iPhone as a gift. The iPhone is a VERY impressive device but I am AMAZED that it still does not have things like MMS, IM, copy/paste, etc. If those things are not added soon I will be going back to BB.
On the ringtones thing.. you can get all the ringtones you want for free on a BB and not ONLY the ones you buy via iTunes.
Trust me, I LOVE Apple and have lots of iPods but I have been very, very underwhelmed by the iPhone.