guess I'm the only that still uses a standalone pda day to day...I have an ipaq rx1950 which stores all my handwritten notes (using phatpad), and lets me use excel files to perform calculations. its also my mp3 player of choice for listening to podcasts, and for reading rss feeds and IM-ing when I don't have space for my laptop. I'm tempted to get a smartphone, but I use my device all day, and I can't afford any downtime from my phone either, so unless I get a spare battery, a two device solution works for now.

The iPhone looks really nice, but until it has productivity software and a replaceable battery, it can't be my primary device - but as an entertainment device, it doesn't have enough memory to store all the videos I want to watch.

I hear/read very good things regarding the interface and eyecandy, so maybe as a nano-sized, cheaper feature-phone version, I can definately see myself with an iphone eventually :)