As an ex Blackberry person myself I'm here to tell you that there is a huge learning curve with the Droid. It's not that it's more complicated then Blackberry. The challenge really is to stop thinking Blackberry. Go beyond that, which is exactly what Droid does.
It will take a while, but just based on the browser speed alone should show you which is the better product. If we can help you out at all let us know. That's what we are here for.