That isn't a fair Question for me to answer I am a Knight Man I love the DiscExtreme I have 2- .45cal & 2 - .50cal And 1 .50cal on the Classifieds for sale.
I shoot the 44cal 300gr XTP / 300gr Speer JSP / 300gr Sierra JSP all with the Harvester Crush Rib Sabot with 95gr loose 2fg 777 and all bullets will hold a 1" shot group @ 100yds All day long, I also shoot the .504 Bullshop Conicals with same Accuracy Seems like No matter what I put down the PIPE it shoots great.
I also have the KRB7 and it shoots Awsome Also!!!

BUT I have to say my First Choise - (1)Extreme (2) - Tryuph (3) Omega

I would go and Shoulder all 3 and see witch one feels the best to you !!!

Ron