When is it good to Sand/ Media blast your car?

if your working on the underside (floors and subframe) a wire wheel and some elbow grease will work, if you mean wire wheel painted surfaces.... NO!! don't do that, sand it down if theres more then one layer of paint, but don't sand it until you can primer it because you will create a whole 'nother battle with surface rust

Ya im starting to think that wire wheeling the inside of the car and underside will be the cheapest and fastest solution since the car has no rust holes.