Protecting paint on bumpers of my new car?

I am planning on buying a new car soon. I live in an urban area where I have to park on the streets quite often. These days bumpers on new cars are painted and the paint quality on new cars seems to be getting worse. Only a month after buying my last new car, the bumpers had many chips and scratches on the paint from careless drivers who park in front or back of me. For my next new car, I want to do everything possible to protect the paint on my bumpers. I thought about getting that clear bra type of material (I think 3M makes it). Is this effective in protecting paint on bumpers? Any other treatments or products that work? Thanks