For what it's worth -
I have a Creative Labs Nomad Jukebox Zen Xtra 40gb
and an iphone. For a long time, I carried my Zen, a cell phone and a blackberry so the iphone was a nice option. Unlike some others, I LOVE my iphone and have had NO problems to date. Lots of great features like the visual VM, weather, internet, all of which I use many times a day. Tess bought it for me the weekend they came out, so we are not newbies either. She is a MAC princess as you know.
As far as the MP3 player, instead of carrying just the phone, which was a big selling point, I still carry my Dinosaur Zen, all big and low tech as it is, but it is awesome. No video or anything like the new ones, no fancy stuff. Reliable, easy to use (I'm old) and irreplaceable! I look out on ebay from time to time to buy a replacement for the sad day when it does finally die, but it's still kicking and gets used often!
I use the ipod on the phone rarely too, and I got a gift card for itunes as a gift, but I prefer to use my own cds and load them the hard way. Something a little too "big brother" about itunes.
for this old lady.
Ma