With some more search time on the forum (probably several days worth), you can find pictures and/or comments/reviews on most of the options available...at least on the "name brand" offerings.
If you are not planning on doing any off-roading, I highly recommend the Westin nerf bars. I just took off the platinum series oval bars and will be cleaning them up and posting pics to sell them in the next week. A new set will run you about $350 (minus whatever discount your website of choice is offering). Myself and Wonderbreadman have some good pictures in our Garage.
If you will be doing anything off-road or anything that you would be concerned with ground clearance, DO NOT get anything like the Westins. N-Fabs will be your next best option...although if you go the route of using the spacers to make them fit, your ground clearance still suffer greatly as with the Westins. In your searching on here you will see that some guys simply remove the rocker panels (like myself) or trim them so the n-fabs will fit without spacers. N-Fabs will run you $300-$330 depending on how you catch the discounts.
If you will be getting into more hardcore offroading, you will want to get rock sliders, rock rails, etc. Jono mentioned several manufacturers with this type of offering. You will find some that will mount with the SR5 rocker panels and some that you would have to remove or trim like with the N-Fabs. Any slider options will run you $450 for the basic offering and can get up to $650+ with powder coating and step plate options.
I am by no means an expert, but hopefully this helps. I was in the same boat you are about a year ago...I wish I has at least this much information before making any purchases! Saves a lot of money, time and effort to do it right and get what you want/need the first time. Good luck and happy modding.
