Actually, I have been pondering a similar question. Ksyrium Elite or American Classic 350 Sprint? The Am Classics are $100 US more expensive, but they are over 300 grams lighter (1331 gm total weight). From all of the reviews I have read, the Am Classics appear to give the best bang for the buck when considering how light they are. I had not considered the Zondas, but maybe I should.