For the money (2017 price 1.2M) not that big difference over the r66 of ec120.
Not sure what you are looking for, but you won't find those numbers in the R66 or Ec120, you may find the endurance in the Ec120 but you will have to let go some passengers. Forget the 125 knots cruise as well if you are near the mtow on both.
No weight and balance calculations available, we think forward cg issues
that's an easy fix for Bell, I doubt they will ignore that.