I'm don't see what makes a phone such a superior business device because it has 17 days of standby time if you can still flatten the battery well inside 4 hours of talking time.
The talk time is about the same as a modern phone and, hopefully, if business is good, you'll be doing a reasonable amount of talking, not waiting 17 days for the phone to ring.
By the stated figures, if you actually use the phone, one will need charging about as frequently as the other.
Sure, if I hammer the wi-fi, applications and so on I can cause my phone to need a recharge within two days, but then I can handle documents, access the internet properly and use it to store files of up to a couple of gigs. All of which saves me lugging a laptop, which wouldn't make it beyond a couple of hours of use before running out of steam, around with me as I'd have to otherwise.
All in all, if I talk for more than a few hours a day, either a 6310 or my smartphone will need a charge every day or two. The smartphone just gives me a lot more functionality in my pocket whilst plugging in overnight or whilst in the car is no more trouble on one than the other.
It's horses for courses really but, for a certainty, if 17 days of standby came into the picture, it'd mean I were either on holiday or out of business altogether.
As for the iPhone, if they're able to use the name in the long run, I don't see what's actually new. Apart from the natty motion sensor rotating the screen format, it doesn't appear to do much, if anything, that any current smart phone won't, except possibly suffering from crippling Apple DRM issues.