If you have the 2 Uraniums why would you need the 2 CB's?
If you dont, you arent a true Buzzsaw fanatic. 
But seriously, with changing both cores and coverstocks, until I can compare them myself, I dont know how or if they would complement each other. I will wait until A_P_K reviews them. 
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I just want 2C was'zzub.
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I am the SGT Schultz of bowling.
"I know nothing!"