Its all in the prep work-- Uncle restores classic Chev's as his sideline business. Built his own booth in his back yard shed. Helped him with prep work millions of times. Spraying paint is pretty easy. Good prep work I can do wonders with spray paint cans. Also worked in the car biz--independent shop doing sales and repairs, mostly Mercedes, BMW's, Jaguars, Porsche and even a few Rolls Royce's and Ferrari's.

Environmental lobby makes it harder to do this. But we fully restored a customers 78' Rolls Royce Silver Shadow II, stripped to bare metal and painted in basically a shed. Came in second in its class at a Rolls Royce Owners Club national show--their main event of the year. Second place cause we painted the windshield washer fluid reservoir the wrong color from the factory.
Employee's from mechanics to paint sprayers, etcetera. Most will do side jobs for extra cash, had my Uncle spray that Rolls Royce during his vacation.
I like original old school even as long as its popping like its new--includes interior vinyl. Before respraying at Maaco (would look good with proper prep). Id rather try wet sanding and some other slightly less work methods before going the prep for respray even at MAACO route.
If your into cars to boats. Invest in one of these:
http://archive.meguiarsonline.com/forums/photopost/data/731/GriotsGarageRandomOrbitalPolisher.jpgThe common orbital polishers geared for the average consumer one speed, well they suck. Example:
http://greatnecksaw.com/images/product_images/medium/80055.jpgWet sand.. then get 3M Finesse-It II Finishing Material (polishing compound) , its for fiberglass. Than I like Mothers waxes to finish things off.