11 is 11. Any 11 speed crank power meter will work.
The absolute joy is that the Q factor has stayed the same between 11 and 12 speed cranks on Campagnolo.
I’ve got a Power2max NG that is going on 4 years old and shows no sign of failing. Best crank power meter in my eyes.
Personally I’d just get pedals with a power meter and call it a day.