Great purchase for anyone looking to upgrade their data collection. These really helped me on hills and being able to more accurately dial in my efforts. You will need a pedal wrench to install if you do not have one already. No issues connecting to my Garmin Edge 1000 and Garmin Connect. These will help you see where your left and right legs are in terms of equal power output, and even where on the rotation each leg is peaking it's power! I keep finding new stuff every time I use them. Worth every penny!
After spending a month of research I finally jumped on the power meter bandwagon. As a data junkie I wanted a power meter that is reliable and could generate numbers (along with my Garmin head unit and HRM). Calibrating takes a couple seconds. The payoff comes when I return home and can do a quick peruse of the ride summary. I know it is a long term disposable spider design but as long as I stay on top of the chain wear it will give me years of service with just batteries to replace. If you are looking to build a project bike and have bought into the SRAM universe this is a no-brainer.
Had difficulties with the original unit right out of the box. Gave consistent cadence data but wattage would spike for 2-3 seconds before dropping to zero and staying there. Contacting garmin support was annoying and unhelpful, how many times can they tell you to remove and replace brand new batteries? Was able to jump through enough hoops to get a replacement unit. I had the original receipt within 30 days so i got a new unit, not refurbished. Worked perfectly from day one. Consistent, believable numbers. Hopefully the first unit was an outlier and the new pedals hold up!
I've been using my Vector 3 pedals for about a month. The training data is awesome and helps me hone in on my weaknesses.
After my first ride in wet conditions, the right pedal dropped out, it's easy to pull the battery and slightly pull the inside contact up so it makes a better connection. Power is the best way to train and track your performance improvement. Conditions and equipment can vary so much so power just makes more sense.
The ease of installation and ability to move pedals between bikes is very convenient.