take a look at the premium four carat. Great geo, with some great aftermarket parts coming stock such as the cranks, and the stem. Pivotal seat, alienation rims, premium 8" rise bars (if that what your into), and everything is sealed and chromoly. Chrome rear rim for good brake power if you want brakes. Check it out here: http://premiumbikes.com/bikes.php?bike=fourcarot
My Premium complete came in at 28lbs and some change but that was last years model. They've put some nicer parts on the new ones. You can loose a good bit of weight by changing out the tires. Those things will last forever but are very heavy.