Just to help you get some responses maybe, what do you consider "best"? Best appearance, best protection? In my opinion very few bull bars offer much protection other than from brush maybe. If you want to push something around with the front of the truck look into something like a beefier front bumper. Like a Ranch Hand or something along those lines.
If it's just about looks, it's really a preference thing. I like black ones myself, but then again I spent a lot of time removing chrome from my truck.