And what would a `real sat nav` be? N900 has quite a real GPS receiver in it (and with good enough resolution considering the power consumption and size that is needed for mobile devices), augmented with cell towers (or as they call it assisted) for a quicker lock-on (without waiting for it to grab 4 stable signals + one backup which takes time and wastes the battery).

Let me get this straight. You want a screen that is virtually unreadable in sunlight, its power consumption varies in dependence of how vivid the picture is it has to show (it beats LCD in power consumption only with darker themes) and has a lower lifetime, while its touchscreen has a horrible precision (specially when used with high-resolution display), consumes 10 times more power to register touch, and can be used only by your bare, fat fingers (or nose)? Talk about devolution...