Redline MonoCog.
4130 tubing, available with rim brakes or discs, also available in 29".
about $400.
www.bikeman.com has the 29er with rim brakes for $370.00
Here's the link:
http://www.bikemannetwork.com/biking/c/SSBIKE
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger