Originally Posted by
datlas
I know someone who works for a certain company that rhymes with "ages" and he admits that they sell double-sided meters purely for customer satisfaction, and that single sided are all anyone really needs.
It doesn't surprise me that they say that. However, I've worked with several riders who think drag measurement is important. I've had poor luck with getting precise measurements from single-sided power meters. When Team Sky/Ineos riders (who famously used Stages power meters during races) needed to do drag measurement on the track, they always switched to power meters that measured total power.