But the "email experience" on the Blackberry's I've used-- from older, clunkier models with the torturous side-scrollwheel to the Storm2-- was only ever as good as the Blackberry OS itself, which has consistently been pretty terrible. Who cares if it's easy to select an email if you have to endure an excruciating boot process before you can get to it? Who cares if the device has a fantastic keyboard if you have to wade through awful UI in order to launch the email app? (This is not to mention the horrible experience of managing the server portions of BES, which I always found confusing and often deliberately crippled).
I think this "myth" stems from the legacy of the Blackberry, which was one of the first devices to really have any kind of data/email capability. (Or, at the very least, was one of the first to be easy to adopt and fairly inexpensive to run with those kinds of capabilities). Of course the Blackberry was considered amazing when it was the only way to connect a corporate email system to a cell phone or other mobile device. But it isn't anymore, and frankly, I've found the "experience" of using and managing Google Apps and an Android phone light years better. (Hell, I think the crappy IMAP client that comes with Android is better than having to use a RIM OS, although I confess, I got out of the game before the Playbook, and thus, QNX).
UPDATE: Grammer, and ending comment.