I have a PacNor on my 30.06. Best thing is that barrel just doesn't foul. I used my 30.06 on my CO bear a week or so ago and it has the PacNor on it. It is a good barrel. Not my best. Don't know about the McGowan.
I have a 30 cal Brux in my safe that I plan on building another 30.06 so I really can't wait. Only reason I'm leaving my current .06 as is ...is because it was built by the late John Noveske. That rife will never change as long as I own it. Only reason it has a PacNor is bc John used to work there and he got it to me at a great price so I went with it.
I tend to stick towards the big names as I honestly don't care about the wait. Plus you can find many cut rifled bbls on bugholes, which is where I got my Brux.
I'd easily take a Krieger, Bartlein, Brux, Obermeyer for cut barrels or a Hart, Shilen, Broughton, or Lilja for buttoned tubes.
My top 2 pics are Hart and Krieger.