I have to admit I was pretty impressed by their products. It was nice to see someone selling something that wasn't the traditional silver paint in a can with a chrome top. If you don't have any heat issues I think that painting stuff chrome under your hood should come out looking hot.. Would love to see the engine cover in chrome.
You can probably expectthese paintsto perform about the same (Heat resistance wise)as a normal spray paint since you will be putting clearcoat on top so I would take an infrared temperature gauge and see how hot that engine cover really gets since it isn't directly touching the engine andshouldn't get as hot as an intake manifold would get (Although that sucker gets hot) but then again so doesthe exterior of a car out in the sun in the summer.. The company is probably going to tell you not to paint any engine parts but in reality normal spray paints usually hold up to the heat as long as you don't paint the exhaust manifold. (When I was14 and just learning I painted an engine block that I was building with normal black spray paint and it held without flaking or peeling. I also painted the exhaust manifold with the same paint.. That went bye-bye within an hour

From that point on I use only high temp sprays on engines (Gotta learn some way)

butthepaintdid hold on the block.
The spitting you get with spray paint comes from cheap spray tips, low spray pressure, and/or an accumulation of paint on the spray nozzle. You can minimize this in a couple of ways
1)Avoid buying cheap spray paints that use cheap nozzles and don't put enough pressure in the can to complete the job. (Usually the touchup paints in auto parts stores are cheaply designed)
2) Always make sure the tip is clean anddoesn't have excess paint dripping on it
3) If you do have a spitter and want to continue using the paint, try to keep the paint on your painted object wet (But not dripping) so the spits blend into the paint better. (Although you should switch to a new can that is not spittingat this point)
If you find a high quality spray paint you can expect results close enough to using a spray gun that you cant tell the difference.