I was not by any means recommending Maaco as a quality paint job, just giving insight from other posts ive seen on here.
Just about any professional paint center can - CAN - get great results. The issues with "cheap paint jobs" are that they skip important preparation steps and important finishing steps.
If the vehicle surface is not prepared correctly, a 1 million dollar paint job will bubble and peel off. I have some experience with paint and body. Although my body work was nowhere near perfect, it was good enough for our Jeep. What I stressed and keyed in on was prepping the surface for new paint. No waxes, oils, fingerprints, etc. No heavy bondo sections that crack under the heat of the pain oven. That's the stuff that matters. A good solid base coat of primer/sealer.
If you skimp on the prep, the paint will be crappy. You can either do it yourself, spending hours on bodywork, sanding, hammering, and then filling, sanding, skimming, De-greasing, priming, wet sanding, re-priming, degrease, sealing, painting. OR you pay for the work to be done.
I didn't get a warranty with my paint job because THEY didn't do the prep work - I did. Been about 2 years of So Cal sun and Idaho winters and no issues at all (other than rock chips and a huge dent I put on her rocker panel on the trail).