I really thought the car was a lot cleaner since I purchased it with 233 miles in January 2010 and now has 2,800 miles. The pics show the dirt and grime in about a six square inch area after one pass with clay. It really took 5-6 passes with clean clay to pull 97% of the dirt and grime out of the pockets in the clear coat. I suppose this looks much worse on white, but if you have a dark color don't be fooled. It won't be just one pass.
Once done, I'll use Meguair's Ultimate Compound and the Ultimate Quik Wax. Time invested for claying will be about 6-7 hours.
By the way, using the Polishin' Pal for the claying has really helped, but investing in a DA polisher with the Paintwork Clay Pad will be a GREAT future investment that I am putting on the Christmas list - maybe the wedding anniversary list