As other posts have mentioned its more in the prep work than anything. Just painting as a hobbyist I have always used Chromobase and Nason products just because thats what I was first introduced to and became comfortable using. Chromobase products got very pricey awhile back so I switched to using Nason and have had very good results with the last couple of cars I painted with it. The one thing I have noticed with Nason paint and primer is that it takes alot more to cover than the with the Chromobase line(some of it may have just been the color I was using), but I like the Nason clearcoats, I didnt notice a whole lot of difference in those. In fact the Nason clear seemed to lay down better than the more expensive ones I have used. Just my 2 cents...