This is the story of Goldie the mobile malcontent and the three BlackBerrys. The first BlackBerry, the 8800, though slender by most standards, was too big. The next BlackBerry, the Pearl, with its odd little keyboard, was too small. For these hard-to-please types, the company behind BlackBerry is hoping the Curve will be just right.

The name itself is one sorry reach, as there’s nothing particularly curvy about the Curve. But this third new BlackBerry model in less than a year from Research In Motion Ltd. strikes an elegant compromise between its larger and smaller siblings.