I returned my new 900 after a one day tryout...I love the features, the speed, the industrial design, quite frankly everything, except the screen. It is darker than my 505, to the point where I got a headache trying to read the screen in the same spot I normally read my 505. Making the font bigger helps, but for $400, that is not the answer for me. When I tried a light to read in that spot, I got the dreaded glare.
Anyway, I'm very disappointed because I really wanted the 900 to work with its very rich feature set