Powder coat most larger parts (chassis, inner guards, radiator support, control arms, ect ) it's more durable. K & R make a good quality paint that's cheap (and a good choice of colours ) and comes in a can ( if you don't want to be continually cleaning spray equipment ) just make sure you use primer or it will just peel off after a while. K & H chassis black is a good one for under your floor pan as it can be easily touched up.