The Toy's by Troy front bumper which is also made by many other companies is one of the most popular bumpers on the market.  With some modifications it can be strong enough to slam into the side of a '92 4 door Caddy and total out the Caddy, yet not suffer and damage.

While back I purchased the Warn PowerPlant combination of winch and on board air and I love it.  However it did not clear my TbT bumper, the bumper hit the right front of it and I needed to extend the bumper out about 3/4 of an inch + for movement when I sometimes slam into the rock ledges and waterfalls and an occasional 92 Caddy sedan.

Full writeup/pics here:  http://www.savagesun4x4.com/enter/how_to_stuff/front_bumper_modifications.html