I use Talley rings with excellent results on all of my rifles including a full custom 300 win mag and a full custom 338 RUM. Both are braked, both weigh in the mid 7 lb range and both shoot heavy bullets. I personally think it's a shame to add the weight of a pic rail and pic rings to a relatively light rifle that is carried all day while hunting.
Both of my customs were built by Jim Borden and he uses Talley rings and recommends them as well.
I did recently try out Hawkins rings to get 25 MOA and they are great rings. The level on top of the ring is more or less useless as you cannot see the bubble when you're down on the scope. I swapped it out for a ring cap without a bubble. He does make a bubble built into a ring cap that is offset, but it's a bit of a hassle to get. I use a stand alone bubble.
There is a gunsmith that Talley recommends who will cut 20 MOA (or whatever MOA you want) into Talley rings as well.