Beef, I'm pushing for an iPhone from Bell. They've got the best smartphone plan right now, $45 a month for pretty much everything you'd get from Telus at $55 or Rogers at $65 a month.
Bell is the only company with the Palm Pre, which is solid but hardly has anything in its app store. With an iPhone you have the biggest selection of apps to choose from which will, in many cases, make the phone even more useful to you.
Depends on what you want it for. Me, I'm getting a high-quality microphone attachment and it'll be my new voice recorder in addition to taking mugshots and web video on the fly for work. I've been syncing my wife's iPod Touch with the calendars, address book and mail on my work computer, then all of my media content at home and it's amazing how much I use it, both for entertainment and work (not surprisingly, she wants me to get an iPhone too). Throw a phone in and where there were once five things to carry around, now there's one.
I've got a request in to the bosses that I'll buy the phone and use it for work if they pay me $65 a month, which is how much they currently pay for my crappy Nokia with Rogers.