I have chambered and shot four Wilson barrels. All have been 6.5's and all four shoot as well as any of the other top brands. These are hunting rifles and not competition guns so all have been the #4 hunting contour. For the price I cannot see using anything else as long as the contours available will fit your need. I have chambered and shot hunting rifles with Shilen, Krieger, Bartlein, Brux, Hart, Broughton, and PacNor barrels. I can say that every one of the mentioned barrels have shot very well. I will add Wilson to the list of barrels I will definitely order and chamber again. The biggest limitation with Wilson barrels are the contours available. A #4 hunting contour and a LV barrel. Ragged Hole does stock a few #5.5's but only in big bore barrels. I wished I could get a #5 or Rem Varmint contour in a Wilson then I would not look anywhere else for hunting purposes. Best bang for the buck in a hunting barrel if you ask me.
My opinion is based upon my personal experience with Wilson barrels that I have chambered and shot thus far. It's true not all of them were as straight as a Krieger, Brux, or Bartlein but all were dialed in properly and all have shot great. You can get a barrel from any manufacturer that may not meet your expectations so your mileage may vary.