For personal use, nothing beats the iPhone.
For work, a Blackberry. Only way I would switch is if I was required to be reachable through e-mail and phone for work and be able to pull documents and have several push accounts, then I would switch to a blackberry, but only if they aren't paying for the phone. I wouldn't want to pay for 2 phones. But if the company pays for 1 phone, I'd just use a BB for work and an iPhone for personal.
I was tempted by the 9700 but honestly, it's the same damn phone as the Bold just in a better form factor and with a better camera. RIM needs to quit churning out 80 blackberries a year and work on COMPLETELY redoing their OS. 4.5 to 4.6 was not a big change to be honest. You still get memory leaks and the app memory is laughable.
I had a Bold and don't get me wrong, it's a great device, but app wise, it sucked. Not to mention, BB apps are quite expensive.