I have a confession to make. I had a BlackBerry for a few months and I hated it. To be fair I was late to the party. By the time I used one, the iPhone had launched and and the BlackBerry was not the Cool Thing any more.
Nevertheless, a few years before that I remember seeing them all the time around the City and Canary Wharf. They had an impressive tactile quality, where were people continually touching them, scrolling the side-wheel or the spinning the little trackball on the later models. By the time I started using one, the hardware itself was still great but the software was incredibly dated.