[Got Time]

Two questions (for now...):
If I read the documentation correctly, the q-factor for the Look Keo power pedals is 55mm, which is 2mm wider than the standard Keo pedals. Is that correct? Can it be decreased to 53mm?

The "old" Polar power meter provides a "pedaling index" which is some "guesstimate" how smooth/"round" your pedaling is. For the Look/Polar power pdeals I found this:
``The pedals also give information to calculate Cycling Efficiency Index value, which shows how efficiently cyclists convert their effort into power, propelling the bike forward. The value is calculated by dividing power output with total energy expenditure, which is determined by heart rate and personal data.''
which seems to be something completely different.
Is there (will there be) a way to have something like the "torque efficiency" or "pedal smoothness" that the Rotor power meter provides?

 

[Got Time]

Is the 55mm the minimum q-factor? According to the instructions the crank width maximum is 16mm and it seems Campagnolo cranks are 15mm, which means a 1mm spacer is required.
Does that give a q-factor of 56mm?
I would have to check whether I could move the cleats on the shoes to compensate for that.

About bluetooth and additional data: wouldn't that require a new head unit?
That is, if I buy this now with the Polar CS600x, I would have to buy another head unit later on if I want more data?

I'm trying to figure out whether I should take advantage of the current REI 20% off coupon or wait for a new release of the power pedals.
Thanks!