Rim choice for fixed wheel TT bike.

I don't get it. I skimmed that and all I can see is that it is saying that aero wheels are more aero than non-aero wheels = no shit. But, how much time will it save you in a TT compared to cheaper mods like removing bottle cages, shaving, wearing a skinsuit, etc.

It was suggested that Open Pros with fewer spokes may be the way to go, and the article indicated that fewer spokes on a box section rim does not help at all. Aero rims are definitely the way to go for TT speeds, regardless of the weight difference. Maybe this article would answer things a bit more definitively.

http://www.cervelo.com/content.aspx?m=Engineering&i=Aerodynamics