Pros:
1) SUPER Fast
2) The blackberry "clock" almost non-existent
3) Touch screen amazingly responsive and glides perfectly
4) "solid" feeling
5) Lovely pictures and Video quality
6) Spacious keyboard
Cons:
1) Media card can be pulled out - Battery has to be pulled THEN the media card
2) Unlock button very hard to push (especially with silicon cover on)
3) finger nails hook on your keyboard when pulling out pocket
4) Play button doesn't do well in between volume buttons
5) No themes for the 9900 yet
6) Battery Life is very bad (3/4 Day - with 3G) and (1 and a half days - with 2G)
Personally, I believe it wasn't worth upgrading from my trusty Blackberry Torch 9800, But you know being the extreme "got to have" techy I am - i had to rush out and buy it and I am slightly regretting it!
Do you have the 9900 - What do you think about it?