I ride by myself 98% of the time and at age 60 have no ambitions of racing. But a power meter has been a great investment for me. It gives me both objective information and a challenge. It's been very good for my health, I think.

I started with Stages left sided, and that was better than nothing. I have upgraded to Stages 2 sided and on another bike, PowerTap G3. I am strongly left-biased, and honestly I wonder if the Stages left helped me to get there (unconsciously). So for me, I won't get a left sided power meter again. Although if I'd never upgraded, I'd still have benefitted.