Test report, pros and cons as well as user comment:
http://www.dcfever.com/reviews/Nikon/d80/
http://www.dcfever.com/cameras/specification.php?CameraID=713
Depends on your budget, if it is your 1st DSLR, buy a cheaper one as you would upgrade later due to technology advancement. Save money to buy better lens.
Moreover, consider the price of lens and flash etc. accessories you would buy.