I've got two Shaw barrels (#3 contour) and I've been pretty happy with them. Both shoot 1/2-3/4 MOA with handloads (260 Rem). I've got a McGowen barrel (#5 contour fluted) that was more expensive and shoots a little better (270 Gibbs). Then there are the high end barrels that do cost more and you would expect them to shoot better, but I suppose that it is subject to one's own opinion. (Hart, Brux, Shillen, Bartlein, etc.)

By the way, both Shaw barrels broke in very quickly and easily with very little fouling and easy clean up.