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

Someone on reddit made a free, no-login-needed powermeter comparison tool, and now that I have a multisport garmin as well, I thought I'd put all my PMs on one bike to see how they compare.
I've got these power meters:

1. Power 2 Max classic 130bcd spider based (usually lives on the gravel bike)
   
2. Favero Assioma Duo (road bike)
   
3. Powertap G3 (TT bike training wheels, Assioma pedals for racing)
   
   

So far I only compared the P2M and Assiomas (got only 2 headunits), done 4x1' intervals and the difference between the 1' avg power between these two has always been less than 1.5%. Quite happy with that! (Assioma in orange, P2M in blue)

I'll be using the assiomas most, so I compare all others to them. I'll do one against my Elite Direto as well.

Edit: Worth mentioning that the P2M classic is a 9 year old power meter!