I bought these upgrading from a single sided crank based power meter, largely because I’d heard great things and had a suspicion my existing meter was under recording. The setup of pedals is effortless and the accuracy has proved outstanding. If you just want to fit these and forget with the only expectation being reliable readings, they’ll do that, they also provide loads of data when coupled with Garmin which I absolutely love, and it turns out I have a slight power imbalance which meant my old meter was slightly underestimating my power… sadly never as much as you hope. I’d always used shimano spd-sl so the change to look was a negative before I bought but outweighed the characteristics of the Assioma-shi for me. I needn’t have worried the look Leo system has been very reliable, and whilst I still slightly prefer shimano, I have no complaints.

Great product. I've been using these for 3 months without any issues. I'm a semi-committed road rider. Very very easy to set up with Garmin 1030 which provides watts per kilo, watts output and pedal % split between left and right (with more options available depending on what you'd like to see displayed on the Garmin). I've not yet explored the laptop interface for downloading and interrogating my data further so can't comment on it. Clear set up / care instructions. Well packaged. I think these are competitively priced, especially when purchased in the sale from Sigma. Very happy with these. Highly recommended.