The 8125/MDA/HTC Wizard is a pretty good handset. It offers some great functions that the BB doesn't and I find the email speed to more than acceptable... in fact faster than BIS often times. I actually prefer the Outlook style email.
Navigation on the 8125 does not require the stylus at all - the programmable soft keys and the 5 way nav pad work intuitively.
There are many applications for the PPC phones that make customization and productivity easy - more so than the BB.
The down sides are the tactile response and logic on the keyboard and battery life. The BlackBerry 8700 wins no contest in both these areas. Oh and believe it or not the BB browser works better the pocket IE
I carry both devices and sync them both to Exchange