I went with a 40" located on the lower part of the windshield and will be adding a 10" soon to the bumper. Got it from Performance Truck Products here in Texas. Give em a call, they can get you a great price on them. They aren't rigid, and are better quality over the ebay ones that are out there.
post up pics of the 10" you end up getting please! i have the same bumper and was thinking of putting a light bar on the fairlead or maybe up on my bullbar.