GARMIN EDGE 530 COMPUTER R6 949, buy.garmin.com

The 530 maintains its predecessor’s ability to record and display power from single- and dual-sided meters, and adds more performance and training feedback. This lets you keep tabs on your VO2 max, recovery time, training load, hydration, and heat acclimation. The number of useful training and mapping features packed into this little device make the sub-r7k price a solid value proposition.