I agree, if you use MobileMe its great. Since I started using MobileMe, no email troubles and everything is synced over the air and its done perfectly. Apps are excellent and are only getting better.
As a long time BIS user I didn't see the benefits that many of the BES users are familiar with, so iPhone w/ MobileMe was better than BIS.
"A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila." - unknown