Hi Hasse, in your last post you asked about my comment "the Accel and PR speaker cables are VERY different from each other. I preferred the PR speaker cables in my system." That comment was about the speaker cables and NOT the interconnects. The Accel and PR interconnects are different from the speaker cable line even though they have the same name. They are made with different materials and only possess some similarities/traits.
An upgrade for you would be to try a set of Acoustic Reference interconnects from source to amp. Going to the PR might be too much sparkle in my opinion. Or even better, I would keep the Accel and try the Galileo Universal interconnect cell. That will prob be your best option. The best place for the PR interconnects is between Preamp and Amp. The best way is to demo both cables and make your decision on your own testing in your own system.