My thoughts

i205--Excellent Candybar replacement to the i30sx. Smaller but still
true to the original i550plus.

i305--I think this would be as close to a Military-Type Phone for the
Falcon Series.

i530--Could this be the Color Replacement for the i60c?

i730--I got this one, well-rounded phone

i830--Should be small but I have a bad feeling that battery life could
be abmyssal here due to its size.

i860--A Nextel Phone with a Camera? Hmmmmm......

i930--We don't need a Microsoft Smartphone-based Nextel Phone. I'd
rather have a Palm OS-Powered Nextel Smartphone!!

See More: Mautenzannig's thoughts