It is a BlackBerry regardless of how you use it. It will have the same OS. It will have the same features. It will use BES and BIS the same way. It will even make the same freaking noises. So it comes down to maybe THREE things.

1) The form factor. Some people love flips, come people hate them. I have talked to people who won't buy phones unless its a flip. Personally, I absolutely hate having to open the freaking screen. I am a pull out of my pocket and use it kind of guy.

2. Suretype vs full Qwerty. Some people love Suretype, and other people hate it. Personally I can type just as fast with Suretype as I can with a full Qwerty, except I can type better one handed. So I absolutely love Suretype keyboards. Although I love Qwerty keyboards just as much. So for me, it really doesn't matter.

3. Screen real estate. I can see there being a big difference with a vertically longer screen. If you use your Blackberry for its email and browsing mobile web pages, I can see where a vertical screen would not be so good. I would much rather fit more text on the screen from left to right, than having to scroll up and down. To be fair, I'm not sure how the screen will be handled so I can't judge really.

This is not like choosing two completely different phones. This is the exact same phone, just with a different body. And THAT will always be subjective.