I am purchasing a used rex. It is my first 450 electric & I am in the market for some batt's.

I was wondering what the pros/cons of using a 4s pack are? My heli has the standard align 450L/35g drive train & the esc specs say it can handle up to 16v.
So who is running at 14v and why. I have searched around quite a bit & cannot find much info on anyone running these.

Thanks all, Noah