Get whatever bumper you like and have it re-powdercoated yourself. That way when it chips again, you can only blame yourself.
Seriously though, i've dealt with hundreds of powdercoat shops/companies, and VERY FEW can powder anything that doesn't scratch easily, or chip/flake like your saying. And the few that can, are NOT cheap!!
Man you guys are fast at responding!
See I always thought about doing that, but I just figured those companies knew what they were doing, I mean, they build bumpers for a living.
The biggest problem is (I have seen) that many/most of the "cheap" powder coater's don't properly PRIME the metal before applying the coating.
I use a local company, and they always sandblast, PRIME (with zinc epoxy), and then powder coat. It makes for a really bullet-proof coating...
But it ain't cheap! [IMG class=inlineimg]/forums/images/PowerstrokeNation_2015/smilies/tango_face_surprise.png[/IMG]
I have a 14-year old "Buckstop" bumper that is pretty tough. Been real happy with it...
FULL DISCLOSURE: This is NOT my truck, just the same bumper...