I’ll stick to answering the question……
Of those listed I own or have owned HCR, McWhorter and APR. Because I and several friends have owned multiple HCR rifles and EVERY one shot exactly as advertised I have to give them the nod.
I think McWhorter rifles are probably the same and are great people. Alamo is newer to me and both shoot awesome and where substantially less money and they also are great guys who mostly stay on schedule.
Shaen has done several and I have zero issues and he also is a super guy!