GO for the P900. Ever heard of viruses for windows-based mobile gadgets hehehehehe (nanakot pa noh?) well they exist. If you want a good business/work phone-pda the P900 excels in every corner. Di naman dahil sa P900 user ako but I also checked the O2 XDA 2 b4 buying my P9. I'd rather buy a pocket pc kung kelangan ko talaga ng window-based application gadget for mobile gaming at entertainment.