I've used my i90c for over 1.5 years now. The phone has never let me down. The case will attest to how often I've dropped the phone and it just never skipped a beat. Menus are intuitive.
My friend had this phone and I liked it. Then I switched to nextel in 2002. My friend upgraded to the i830 and I bought that one too. But I still use the i90c because I just like it too much to ...