Here is my philosophy on paint job. There is nothing that will match factory applied paint job... even dealer body shop can't match it.
That's said... now Maaco is cheap paint job... they don't prep your in the manner as standard paint job is done... instead, they leave factory paint alone... chemical washed the car... which will slightly etch the car for proper bond to their paint (made by DuPont, by the way). So in essence, they preserved the factory prep work with new paint.
The catch is this, if you have pending rust... you must treat it now on that particular spot or it will grow like cancer. I had my car painted for $2000 by a friend of mine... he prepped my car... sand it down... everything... however it did start to rust 3 years later... some is their prep problem, other is typical rust on MB that rusted from inside outward.
I don't care if you spent $4000 on your paint job, you will see it rust somewhere that ruins your investment unless you tackle 100$ of the entire body, inside, outside, underneath the chassis, etc. Only restoration job gets that much attention.
So what is my opinion of Maaco? If your car is good and you want to keep it a couple more years, then go ahead... I am assuming you are not going to keep it super long term... like 5+ years... However, if you do want to keep it long, then I suggest you get UV protection coat that they offer... keeps their paint from fading. This is assuming whole cost is less then $800.
Some may paint for $1200 at regular body shop... In these cases, ask them how much more for better paint than what they normally use... the key is better and compatible clearcoat job. The paint cost is practically nothing... maybe $300... you might even want to buy the paint for them... go to the body shop paint supply and talk to them.
All other plans, such as super long term, shop around and look at their shop cleaniness, cars that they just finished...perfect paint job is near factory... no blemish or embedded particles.