I think I have 4 McGowens and I'm pleased with all 4. They shoot great, clean up easily, and don't copper foul and drop accuracy. I wouldn't hesitate to buy another one when needed.

I also have 1 Shilen and 1 Lothar-Walther. They are equally good barrels. I wouldn't say my Shilen was better than my McGowens. About equal.

I have not tried a CBI barrel, but I admit they sure sound good.