Greetings,
I have used Douglas, Green River Rifle Works, Green Mountain, R.A. Hoyt, Ed Rayl, Bill Moody, Rice, Goodoien, Web Terry, Resor, De Haas, H&H Barrel's over the years, and found all to shoot great once you take the time to work up a load the barrel will shoot at it's best accuracy, (Sweet Spot). Some of these company's are no longer in business, or the builders have passed. After 30 years of shooting Bench rest, I have found cut rifling .010 to .012 thou. deep, with a twist of 1x48, 1x66, 1x72 depending on Cal. size, with grooves wider than lands, and square bottom rifling to work better for me. In the end it will come down to cost and availability, Good Luck!