Here you go. Apologies for the lighting in the second shot - the bulb in my desk lamp blew at the most inconvenient moment and I had no spares lying around. I guess I ought to head to the hardware store this evening.
They're in no particular order. Height-wise, the M810 is the smallest of the pack.
It may be a little difficult distinguishing the differences here, but the X800 is slightly thinner than the M810, which you'd expect since the former has no QWERTY keyboard. The M810 is a lot thinner than the M700 and the JASJAR. Also, just a note: the M810 is resting on the X800's joystick, so it misleadingly appears to bulge at the bottom.