I have used Kreiger , Hart , Lilja ,Douglas , Wiseman , Rock Creek , Shilen anda few others all with good results I think that as long as its a quality hand lapped barrel your gonna get good results.
I persoanly like the ORck Creek because of the 5R rifleing it seems to be a general concesus that they actualy shoot a little faster and last a little longer than others although the 3 Groove from Lilja and Pac-Nor are also supposed to do the same , I seriously doubt that you could tell a differance with using both on twin guns and shooting them to death.
I have an Obermeyer on a 300 Mag that simply amazes me with it velocities , its shooting about 100fps faster than it should wioth zero pressure signs.
Broughton also makes a 5C barrel like the 5R thats supposed to be great to.
Any of the top bbl makers will make you a great bbl. W/that said, I have a 5c Broughton on my 6-250 and it is my favorite bbl. Cleans easier than the 3 groove Lilja I had. Can't say it shoots any better though.