Actually MBA had an article last year that talked about the FS/HT issue. Based on research done by bicycle companies, all signs pointed towards FS being more efficient..Especially with the advent of rigs such as the Epic. People still hang with HT because it "feels" more efficient..Even though it's not. Based on the article, I agree that FS is more efficient...However, I think every bike has it's place, and I can't really say more since I haven't ridden a FS on the trail.