I have been reading a lot on this subject, I have gone by a couple of accessory shops and even have stepped on several installed, both factory and aftermarket. I am a big guy 300lbs, 6'6" and there definately is a difference. I have been leaning toward the n-fab bars for strength and really like the look of them. I am also contemplating building my own. I want something that looks different and not the same as everyone elses truck.