I want to create a 1.0 application that uses WCF calls with the Blackberry Playbook Tablet.

Which technology is easier to make a CRUD application using WCF: Webworks, or Playbook?

The WCF service is very flexible in how calls are done... javascript, soap, etc, so I just want to know what client technology will help me churn out a quick productivity application?

It would be great if you can mention what is a closer fit to my skillset as well: C#, Javascript, and to a lesser extent CSS