I've used the home version, available at Home Depot. It works great, but I don't have anything to compare it to. If you read the can, it says its good for home repairs, pvc, etc. Smells bad, but works.
If you have to fill in pin holes and scratches you can use baking soda and superglue, then lightly sand it. If you have to cover a large area and smooth it out, use bondo, avoid the stuff with fiber glass, work in a well ventilated area and wear a paper mask when sanding or you'll be blowing pink stuff out of your nose! Been there, done that.