I use PowerPods (I actually have three of them, a V1, V3 and V4). They are pretty easy to set up, can be easily transferred between bikes and, if set up properly, give reliable power readings that appear to be consistent with what I feel on my Wattbike in the garage.
Merlin have the V5 for about £260.
There will be people out there that think a power meter can only be a strain gauge. However physics is physics; the PowerPod uses maths and basics Newtonian physics, and in my humble opinion, works very well. DC Rainmaker agreed when he tested the V1.
Mine are mounted directly under my Garmin on dual ‘GoPro’ / Garmin out front mounts. Very neat and out of the way. The V1 is a bit temperamental in torrential rain, but the V3 and V4 are stable.
