This is the best spray paint in a can I have ever used. It's well worth the few extra bucks.
The durability test, scratching it with my finger nail, did nothing to it, while other paints I could either scuff or scratch the paint right off with just a little effort.
On the last coat I went a bit closer (8" maybe) then they specify (12" or so) and it got a better gloss to it. Runs are no worry at all, the stuff covers real nice.
I know it's been talked about before, just wanted to give my 2 cents on it.