KV / Gearing choices

[Dafni]

Okay gang, here's a question for the experienced BL users:

Given the same voltage, and adapt the gearing to get the same speed, what would be a better choice: high or low KV? I mean in regards to the "stress" on ESC and motors.

I know it all boils down to the so-called "most efficient rpm range"... but lately you hear stories here of people having very good luck with uncommon voltage / KV combinations. Such as 1600rpm/V on 12 cells... and then you'll have to use a low FGR to get to some speed... but if it works for people.

Real life experience would be nice to hear. I wonder what really IS the most efficient rpm range.

Thank you
Daf