Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

The P2M has an accelerometer to give a real time cadence reading, as opposed to the the guesstimate based on a single magnet.

I'd say P2M if you have PTs for other bikes anyway. But weight, features, and flexibility all seem a bit unimportant.

Toss a coin?

147g extra weight is almost 3 snickers bars in the back pocket.

P2M + 3 snickers bars or a PT wheel + cover?

I think PT cadence is based off torque pulses.

I guess I'm looking at crank power + disc as a way to shed a bit of rotating weight from the bike and since the G3 now requires a different head unit, there's nothing tying me to the LYC.