Like they say Chris, the only dumb question is the one you didn't ask. I'm no expert, but it all depends on what you're trying to accomplish. For most smaller parts, using like semi-gloss black you can use Krylon. Me I've found True Value paint to be equal to Krylon. Their satin black is sweet, and I've used it on bodies. For Testors, and Tamiya I buy at Hobby Lobby with the 40% off coupon but you can only apply it to one item per trip. So if they aren't close you have to factor in gas. I buy some at Michaels but the one in my area neglects their paint rack so I'm limited in the colors I can get there. I use the coupon there too. You will get a lot of ideas on your question, but these are my short and sweets.