So far my 9700 is my favorite. It does everything I need!
I think that the Bold 9700 is great but have you tried the OS7 Blackberry devices?
It's just a suggestion, i really liked the Bold 9700 but it's a big difference to use a Bold 9900
The 9810! Like the others have said, it really is the best of both worlds with a bit of a smaller keyboard than the Bold, but a larger screen. I love mine!
The 8230, although heavily overlooked, is very special to me as it was my first BlackBerry (first smartphone). Incredibly solid. Sometimes, I miss OS 4.6.
That's if we're just talking phones, however. I think (even though I love my PlayBook as it is) PlayBook with OS 2.0 will be the best device with the BlackBerry logo on it!