iPhone has more interactive features as well as software to play around with. Great as it's multimedia packed features. All depends on why you want one. Is it for Style Factor? Features? Multimedia? Games? Camera? Outloook? Messaging?

Personally, i'll go for a BlackBerry. Have one presently with a SE P1i. Waiting on BlackBerry Bold to launch here in Malaysia, then I'll seriously be a CrackBerry Addict!! ehehe...

Happy Hunting!!!