Hell no.
Look at this:
Admittedly, many "smart" phones would have similar charts, but think about the iPod: maybe waiting for the second or third generation is the way to go.
Then again, what the hell do I know? I've never owned a cellphone in my life. I'd just have people calling me on it, which is annoying, and I would become yet another driver who no longer uses his turn signals because I'd be holding the damn phone. Maintaining the continuity of a conversation is obviously more important than staying aware of where my 2000 pounds of steel is headed at 70 mph...
I know two people who've been killed while talking on phones as they drove; one went through a red light while arguing with his wife and got obliterated by a cement truck (quite a way to end the relationship). The other just pulled out into traffic and got T-boned right in the driver's door.
Hang up and drive, no matter which phone ya got! I want all of you to be alive, growing more mushrooms...