totally agree with Corax, and i include the most important factor, in N9 you have LINUX, no other phone in the market (besides N900) is running linux, if you love linux you don't have any other option, thas is the reason i have two N900 and one N9, they are LINUX, with that money i could buy a android phone twice potent and with better screen but NO. With linux you can run multiple OS in your system, have access to the huge number of debian ARM packages, and a terminal to hack your device to do with it whaterver you dream for.

(text written from harmattan open mode )