Smartphone Research Continued

Updated reading for project:
The Inmates are running the Asylum, SIG CHI 2005 conference, Mobile Usability, Designing with Standard and various sites. A full reading and research list will be posted in the next couple of days. Created a short list for the smartphones, they are as follows:
Motorola Q - good phone but maybe too simple, Blackberry 8800 - solid and it's own browser, Palm Treo 750W - good phone and Windows Mobile. I need to decide if I want to run with Windows Mobile or is this not common enough to facilitate a frequently occuring task? Project plan for the tests will be created shortly with further details on the tasks and the scope of the project.