Even the two (old and new) are really the same thing to a lot of us...
I remember seeing a Nokia ad one boasting of their 83 kinds of phones. I was thinking how dumb that is, since they have 3 basic kinds (cheapo, blackberryish, and iphoneish) and having been through a few of their phones, know they run towards the unspectacular. If they would just make one each of the three kinds, maybe they could offer one really good phone for each type.
Apple's making one really good model is a really good model.
The downside for awkward folks like me is that I don't like the cheap-ish, the blackberry-ish or the iphone-ish. So at least one of the other 80 Nokias is always the one I go for. For corporate purposes I know it has to be a Blackberry (as Apple seem to have no intention of making the iPhone meet security standards - the number of big companies allowing iPhones just amuses me. If they could only see what they are providing as unprotected data...ah well) if you want corporate push email, but for everything else you're screwed.
Still haven't found anything to beat the 6310i for the functions I need - hope I don't break it :-)