guilty... avg. mph seems for me to be one of the more meaningful metrics considering I am comparing me-to-me on the same ride which is a roundtrip. I am always interested in trying to understand what all goes into making the difference from ride to ride, e.g., weather, wind, recovery activity, mood... so far I can't make heads or tails of it but topping a previous high of 12.6 avg. mph is what I'm currently chasing.