If you're in the market for a new Blackberry but are unsure of which one you need, you might consider reading this review. Trusted Reviews has published a review of the Blackberry Pearl. They cover all the bases and in fact call the Pearl a "must have."
"As a business device, it's clearly the next in the 'must-have' line of devices. But there's a caveat here - old-school users will possibly find the new form factor and controls too much of a jerk away from the previous iterations, and will likely lack the patience required to learn SureType."