Well I have to say when I change my gearing to a smaller larger rear cog on my Pinions, I occasionally go by number of clicks vs actually feel of the pedal when I'm watching out for traffic etc, out of habit, so I end up pedaling in a lower gear for longer. And it isn't just higher speeds but average speeds. Once I went to a Pinion, my average speed went up 1+ mph, even though my max speed was around the same, cos I calculated the gearing that way. However, the fastest upgrade I did was going to very fast tires. That shaved minutes off my commute.