Rogue 66 Magnum vs. CJ Premier 17 LS

I have had my 66 for a number of years and I am happy with it. It really is a simple matter of upgrade fever
Do you out there feel this move would result in significant sonic benefits or would my "upgrade money" be better spent elsewhere.
I listen to rock and jazz primarily.
Here's the rest of my gear:
Cary 303/100, the 66, Odyssey Stratos and VSA VR 4 jr's.
Vh Audio pc's and ic's and Alpha Core MI 2 spkr. cables.
Thank you!