N97 sample pictures (slide show):
i8910 sample pictures (slide show):
My takeaway? Both cameras are great!
The N97 features better optics and better image processing (more detail), while the i8910 features a better sensor (less noise) and better video recording (except for audio, which is apparently limited to AMR).
The i8910 lacks auto-rotation (?) and a lens cover, while the N97 lacks HD (720p @ 24 fps) and slow/fast motion video recording.
N97 sample video (download original):
i8910 sample video (download original):
Update: Below is Matt’s lovely i8910 sample video.