The terrain and the strength of the rider is what determines what you really need for rings. I still like the variety my 3X9 offers. A 2X9 can give you a wide spread and can probably stretch as far as a 3X9. A tad less weight and less shifting would be my guess for the 2X9. Since I ride pavement to get to my trails, I like the 3X9 setup. A 1X9 can save you TAD X's 2 if you get the range that you like.
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I think its disgusting and terrible how people treat Lance Armstrong, especially after winning 7 Tour de France Titles while on drugs!
I can't even find my bike when I'm on drugs. -Willie N.