I used the gloss white on my truck, and used a combination of spray on and roll on Rustoleum. They matched perfectly, and for me, I thought the spray actually went on a lot smoother, but tended to run if I went too heavy.

Overall, I like the roller method better, because it's 1.) cheaper, and 2.) doesn't drift like the spray and get all over everything else, and 3.) less wasteful because of lack of drift, and 4.) can be touched up if it runs, but if the spray-on stuff runs, you're pretty much out of luck, and 5.) you can load more paint on per coat without it running.