Twice for the MGM barrel compared to the Pro Hunter? Without a doubt, I'd go with the Pro Hunter since I don't think an MGM barrel is worth twice the money.
That said, I have a number of Pro Hunter barrels and a single MGM barrel. I'm very impressed with the MGM barrel but it didn't cost me close to $570 either.
The first target was shot with a Pro Hunter rifle barrel.
Shot with a Match Grade Machine Encore handgun barrel.