Best form of advertising for me has been going to local car shows with a stripped car. We basically took a running 67 belvedere, stripped the outside, drive to local carshows and put our business cards in the windshield, walk around and pass out flyers. Cheap and easy, most of the shows we go to are free or less than 50 bucks. My 2 cents.
We have done both, just like to show a finished product. Everyone seems to strip 1/2 a car, just like to be different!! On this car we did half with plastic media and half with glass bead to show the differences.