BlackBerry continues to dominate the general smartphone market, and its grip on the business market is even tighter. But which BlackBerry is best for which business users? Heres a comparison of the three popular BlackBerry models: the Pearl, the Curve, and the World Edition.

[Picture: The BlackBerry Pearl (left), BlackBerry Curve (center), and the BlackBerry World Edition (right) are three business-tested smartphones.]The Palm Treo was supposed to be the BlackBerry killer. So was Apples   read more »