I'm using the above 3.
In terms of design, I'd rank 800 first, followed by 810 and
320.
In terms of user-friendliness, 810, 320, 800.
810's T9 predictive text is more stable and the user will be able
to key in messages at a much faster speed. As for 800 and 320, the
T9 is somewhat similar but you cannot input it as fast as the
810.
KG800's touchpad is sensitive. Do not treat it as a button - it's a
touchpad. Users with big thumbs may find difficulty in using in as
they might tend to hit the wrong button.
Ask any questions and I'll try to answer them =)
