Ballistic Advantage is a budget barrel company that once produced great barrels. Those days are long gone and BA is in trouble along with Aero Precision. To date, I've returned three of their .223 barrels, at least their customer service was decent, but they never would tell me what they found wrong with the returned barrels despite me asking multiple times.. They should have an MOA guarantee, if their CS is even up and running, just return the barrel until you get a shooter. There are no shortages of disappointed BA barrel owners on various gun boards.
I've had good luck with other non .223 BA barrels such as their .22 ARC and 6mm ARC as well as some .308 barrels on some AR10 builds.
The only Wilson Combat barrels I have are AR10 barrels in .358 Win and .338 Federal and initial testing yielded MOA and under so I stopped developing loads and ran with what I had. I read good things about their .223 barrels and I have a receiver set left to finish and was considering a WC.
I have other barrels in .223/5.58 such as Douglas (multiples), White Oak Armament (multiples), and Criterion and they are all well under MOA shooters.