Aftermarket Bumper for a Tundra

Well, my '06 Tundra already has a mysterious dent in the rear bumper. My
guess is that the metal is about 40% the thickness of my '90 Chevy's factory
bumper. Since I do four wheel in the Sierra Nevada, and solo off-roading in
a LWB rig sometimes requires backing up until you bump the tree or whatever
(that's why they're called "bumpers"), I'm thinking of options.

1. Is there an aftermarket "Barden" type bumper that will follow the OEM
contours?
2. Is the color matched bumper from a Limited painted metal or plastic like
my existing front bumper? I know the plastic bumper covers can scratch and
stuff, but it may give a bit more without denting.

I'm not a big fan of tube bumpers where you see the OEM contours for the OEM
bumper.

Thanks for any ideas,

Curtis