Of course... no argument.. and you are the expert when it comes to any type of efficiency. I'm just saying I have a ways to go before the decision between whether my bike is a bit more aero, compared to being a bit lighter, will be a big factor. The percentages gained in either area are very small for me, as I weigh comparatively a lot and am not yet very aero. My size probably gives even more of an edge to aero over weight. I believe I can increase my aero efficiency a greater percent than I can decrease bike weight as a percent of my total weight. The paper points out how small the percentage gains are compared to rider influences, but I'm not saying they aren't important. If you want to win, then any advantage or disadvantage is important. And the paper doesn't take into account the amount of time a rider might spend in the wind compared to the average. If you get dropped a lot, you need aero!

And I have a week to decide whether to participate in a team buy. Big discounts on either the Scott Foil, the Cervelo S5 (or R5), or an ultralight Guru Photon in team paint. The Cervelo geo suits me better, but of course I wouldn't get a chance to ride any of them in a size close to what I need.