User Name wrote:... but I occasionally felt that the brick-like rims on my old Mavic Cosmic Pros (38mm-deep alu) held speed better than my shallower rims.
although a heavy wheel reduces speed at a slower rate than a light wheel, ignoring the very, very slight increase in rolling resistance from the entire rider/bike system being slightly heavier, it takes exactly the same amount of energy to maintain speed on flat ground. you are only working against rolling (mentioned earlier) and wind resistance (constant, and equal in both cases). the sensation, even the noise, can make the wheel seem faster, when it is merely different.
i agree with the "standard wheel comparison" argument, however. it would be nice to see a modern wheel used as the "standard wheel". i think some companies do (rolf prima?) use the Mavic Ksyrium SL, which aerodynamically is a very, very bad wheel. I cant remember if it might be WORSE than a 32hole box rim... I don't necessarily blame the wheel companies in trying to show themselves in the best light, as long as all the fine print is actually printed.