The Brownings come glass bedded and free floated. It costs about 22$ to order new trigger springs to get thepull to exactly want you want. I would take the Browning ina heartbeat over the others you've looked at, as a matter of fact my last2 rifles have been A-bolts. A Stainless Stalker in 325WSM or 338Win will be my next one.Both ofthe rifles I bought shoot great, I dont have the boss system on either.

Do a search hereon the A-bolts you'll wont find much complaining about them.