ipad 2 and Playbook are two different animals. The Playbook is awesome in its own right. The integration with twitter, facebook, linkn with contacts and email is seamlessly. Its essentially a business product that does what its supposed to be. The 1 GB Ram along with the smaller size is awesome. The apps are the downside.
However, the new playbook 2.0 has great new updates, including email, calendar, contacts, video and music store, etc. Its worth a shot.
ipad 2 is great for its apps. However, 512 MB RAM is pretty lame. The new ipad is more of a challenger with great RAM (1 GB) along with retina display, 4g LTE. Its more worth the price. However, for basic web browsing and business use, Playbook is worth it for the asking price of $299 for 64 GB. Not bad at all.