"Setting up Gmail on it is a hassle and is probably not possible"

^ go into email, new account, enter Gmail user and password and its there. took me 5 seconds.

about the lag and stability, running at 800+ (like 90% of n900s can) they run so smooth and Maemo is the most fluid OS i ever saw.

The screen does scratch fairly easy compared with others, but at least it doesn't f*cking shatter when you drop it on f*cking carpet like my iPod Touch did! that also has about 100 scratches on it whereas my N900 has 2. +1 to the Resistive world.