Due to lack of funds for a more custom barrel I have narrowed down a future build in AR .260 rem to a DPMS 20"or McGowan barrel 20 or 22". the price is about the same. the DPMS is S/S black teflon coated and McGowan is S/S satin finish. both are around 300.00 What are all of your expert and non-expert opinions between the two? or any other barrels in that price range?