I've had very good results from resprayed bumpers in the past. About a year ago, I picked up a bumper cover($15 at a pick & pull type junkyard) for one of my parent's vehicles to have repainted. The car was in an minor accident that put a good sized hole in the plastic bumper cover. I had a very reputable shop in my area that has done paint work for me before handle the task of spraying the bumper for me. It's held up great over this past year and is no more prone to chipping than the factory finish as far as I can tell. I left the car with them so they could match the paint on the bumper to the rest of the finish and they did a fantastic job: on it.
