I'm sold on the Muscle Brake on this latest Mark V 338 Lapua build.
In the prone on a bipod/rear bag, I swear the felt recoil is less than a unbraked 7mm Rem Mag pushing 180 Hybrids at 3000. Off hand, the rifle is brisk though.
So I think "felt" recoil is very reliant on many factors (i.e. shooting position, stock design, recoil pad, muzzle brake/type, etc)....be best to drive before you buy if you can...and if you find a setup you like, to build based off that experience.