This is one we will just have to disagree on. My 300 RUM was one of the best shooting rifles, I have ever owned. I liked my brake so much, I have even been thinking about putting one on my 30.06. I'd probably never spend the dough on it but I'd put it on in a second if it was free.
On a side note....All of the elk I've killed with my 300 ultra mag were stupid close!! I could have taken them all with a bow.