I bought the Stryd running powermeter. Ordering and delivery were excellent arriving the next day. The device itself was excellent and integrated with my Garmin watch. My hesitation is its reliability. I have had two devices now, and both failed after a the second week. Remote support from Stryd was excellent, and after the first failure they refunded the cost in full and I bought a second. I am now promised a third. They did say they had had a faulty batch which had shipped to NRG, so maybe I got two from the same batch. Once I get a working version, I think this device is great and helps me understand my running form better, adding more insight than just the Garmin alone