I've used their 2k chassis black previously. It is a very good paint. Goes on smooth, lays out nice, and hardens into a strong durable finish with the right amount of gloss. This is because 2k spray cans have activator and hardener in a capsule inside the can. You have to use the red tab included in the cap to pierce the capsule. This also means you use all the can and throw it away. There is no saving it for later as the catalyzed paint in the can won't be any good after a few hours. Also, because of this capsule in the can, there is less actual paint in them. You may need an additional can or two over what you might normally think you would use.
Is their spray any better than others...it depends. Compared to the $1.99 store brand crap with a generic nozzle, yea, it's a lot better. Compared to some of the $15 high end cans, no not really. I think its Rustoleum that actually has a dial nozzle on their cars that you can really alter the pattern for spraying. That's about the best rattle can nozzle I've seen.