I ended up going with Assioma duo pedals myself, after originally ordering the single. But now that I have them I regret spending the extra money (but don't tell my wife this). Once you know your L/R balance what more do you need to know about it? Unless you are totally one-sided and are aiming to correct it, you won't use that data again. It turns out my balance is between 50/50 and 52/48 L/R. I had knee surgery in my right knee last year and that would explain the entire difference. How much accuracy does a 63 yo rider like myself really need? Not much.