The 2010 CD doesn't include wiring diagrams. It looks like the 2009 CD does include wiring diagrams. If I had a 2010, I wouldn't hesitate to get the 2009 CD. 2009 and 2010 JKs are extremely similar, if not identical.
A good deal is AllData. A 5 year subscription is very reasonable. The manuals they show are the same as you would see on the Tech Authority CD.
AllData also includes TSBs, Recalls, and other campaigns.