Is it worth buying a PlayBook if I do not own a BlackBerry?

Difficult to say. The PlayBook's tech specs are certainly impressive (see below), though some have been matched by other devices in the market since its September unveiling. Price will be a bigger issue for non-BlackBerry types.

The company has not said as much, but packaged PlayBook-plus-BlackBerry sales will likely be a major plank of the sales pitch for carriers, who stand to gain little from selling a tablet without a data plan.