I've got the stalker in 270 and like it pretty well. The BOSS-equipped rifles come with both a ported & non-ported screw-on end. I use the non-ported version to keep the noise down. I can shoot 100yd sub-1" groups off the bench with 130gr Ballistic Tips. I agree with the previous post about the replacement trigger spring, I think I got mine from Midway for less, maybe not. Either way, it's a great way to improve the trigger.

If you don't reload, & are serious about accuracy, get the BOSS. If you reload, or aren't serious about sub-1" groups, forget it. I'm not sure i would buy the BOSS again, but I reload...

-Ben