The much-anticipated BlackBerry Storm goes on sale Friday through Verizon Wireless, threatening to create some serious waves for what has been smooth sailing for the popular Apple iPhone. I’ve been testing an evaluation unit for the better part of a week and can say that the sleek new Storm is the most compelling rival yet, incorporating many of the iPhone’s revolutionary features but adding a distinctly BlackBerry style and some new tricks of its own. Corporate types waiting for a major upgrade to the BlackBerry are going to love the Storm’s brilliant display.