iPhone unless you want something that does emails and phonecalls but not much else too well. iPhone will give you the emails, ipod, apps, games and a pretty good GPS all in one device.
Other option worth considering over blackberry is an android, why have 2 devices when one does the job.
The Torch is a massive improvement on the Bold and I use it for everything including GPS. It doesn’t do games that well but it a phone FFS.
You Fanboys should really take another look!!