My personal favorite is the White Brothers Solid Rock in the 26" format. I purchased one from a seller on Ebay and mounted it on an older Bianchi DISS. The fork is everything I expected from a Carbon legged rigid fork. It has some compliance, is very stiff and responsive in tight single-track and when using a fairly large front tire does well in the rough stutter bumps. Picture and link to White Brother's site below:
