Some thoughts since I made the change:
1. The Blackberry's selling point is its ability to synchronize all incoming communications. As far as I can see, that remains its selling point. That being said, push Gmail, the notifications window on the home screen, and endless customization with SMS programs (i use Handcent + Swype) trumps any claim RIM had to being the communications master.
2. The Hero is somewhat of an older model Android device, and my Blackberry was outdated. No new OS updates are going to be made available through the providers for either. The main difference here is that even older Android devices can be rooted and the HTC Sense UI, no matter what phone, is still years ahead of even Blackberry 6.
3. The Hero does something I've been waiting for RIM to implement for about five years now and still doesn't, namely pushing contacts and calander information without having to download another program.
4. Just to check the accessibility of contacts and internet searches, I created a scene wherein the homepage was solely the google search widget. It was still easier and quicker to access things with that alone than with anything RIM has done.
I'm an objective person, and seeing how the Android OS is multicarrier, I can no longer see why anyone would choose a Blackberry over just about any device running Android.