Hartshot, Brownells sells a device similar to the Boss system and I saw a guy at the range raving at how good it was.
The Boss systems can be had with no holes for venting gas(recoil reduction) and with the Holes (muzzle break).
Many of the gunsmiths out there will Boo Hoo the Boss system even though they have never tried it, so be prepared.
Most custom guns can be "tweeked" to shoot a very accurate load, while you get to choose a factory load and dial it in to shoot bug holes. For example, in my Dad's Browning A Bolt with the Boss, I loaded a max load of R#25 with a 154g Hornady with a Win Mag primer at 3200 fps out of this particular rifle and "tuned" the load to shoot 3/8" groups at 100 and 1 1/2" at 400 yards...not bad for a factory rifle with nothing done to it but a trigger job.
