[Jeff in Kentucky]

For the street in the summer, I recommend these because they are not nearly as hot as leather, and you can add dirt bike knee and shin armor and armored underwear underneath them:

http://www.revzilla.com/motorcycle/olympia-recon-3-mesh-pants

In his book, Lee Parks recommends the Aerostitch Roadcrafter textile (nylon) suit for the street, and leather for the track. He recommends leather from Z Custom, Bates, Vanson, and Syed; with Syed having the most protection and Vanson with the best fit and finish. For higher end clothes, getting them custom fit does not usually cost much more than off-the-rack, and is especially important if you do not have a typical body shape.