Throw Tough Country in your mix.
There was also a thread about this not too long ago. You maybe able to find it using search, may answer some questions for you.
Biggest decision is what "Type" do you want? Traditional pipe based bumper, no pipe just flat metal (or diamond plate) pieces. Do you want a full brush guard on it or just a bull bar, or maybe no guard and just the bumper?
Once you figure that out, just look at all the manufactures to see which one you like on your truck (many companies deal with the headlight hoops differently which can really make or brake a design for certain people).
In my opinion, a roper bar, front 2" receiver hitch, headlight hoops that use a cross bar (not just one big open hoop), and being able to see the top of the guard (usually just the roper bar) from the driver seat are a must.
Google your year make and model with "front bumper replacement" and get an idea of different designs out there.