I tried buying a couple of different barrels today, but they sold out between the time I added them my cart and tried to check out. I eventually bought a Daniel Defense. Thanks for all the pointers.
A DD barrel will serve you well. IME they are very consistent, shooting 1 1/4 to 1 1/5 MOA on 5 shot groups. They have a no BS warrenty, but it's unlikely you will ever need it.