SONY-ERICSSON K750i. I was going to buy the new stylish and slim W880 but I decided that to put that money towards getting a iPhone from ebay if possible.
I have a Treo 700p and I can't wait to get rid of it. Was great for a short period of time, then I starting to loath it. Very unstable and hasn't gotten any better.
Nokia N70. I loved the Symbian OS/UI when I moved from Motorola phones, but to be honest, now I just find it tedious to use. I can't wait to use a phone with a UI as quick and fluid as the iPhone's.
Unfortunately, I won't be getting an iPhone anytime soon. I still have a year left on my contract, and I live in an area that Cingular doesn't service.
I have a PDA phone Cingular 8125. Great phone, a little bulky but I love the keyboard for texting. I just don't wonder how well you will be able to type on the Iphones digital keyboard, especially if you do not have tiny little fingers.