In my experience there is a definite value to upgrading one component at the time; be it an interconnect or anything else in the system. Of course different connections may have different effects on the overall sound of the system. In your case where you are only looking at 2 sets of interconnects you could start by upgrading one set, listen for improvements (or otherwise!) then change it with the other set and listen again to the effects of change. Then you can decide if it's worth upgrading the second set as well (or indeed was it even worth changing the first set).
For what its worth; I have Synergistic Research interconnects throughout my system between all components and they sound superb but I did not upgrade all of them at the same time. Once I bought 2 pairs I was enabled to replace each component at a time and evaluate the change for myself.
I also agree with the other comments here that you need to hear significant improvemnt in the sound quality to your ears before upgrading interconnects. What I am suggesting is not about the cost of the cable. What may be an open and liquid sound to me you may hear as sterile sound.
One thing is for sure and that is the right interconnect makes a huge difference to the sound of your system. It's a lot of fun trying to find the right one for you and your system.
Mort
For what its worth; I have Synergistic Research interconnects throughout my system between all components and they sound superb but I did not upgrade all of them at the same time. Once I bought 2 pairs I was enabled to replace each component at a time and evaluate the change for myself.
I also agree with the other comments here that you need to hear significant improvemnt in the sound quality to your ears before upgrading interconnects. What I am suggesting is not about the cost of the cable. What may be an open and liquid sound to me you may hear as sterile sound.
One thing is for sure and that is the right interconnect makes a huge difference to the sound of your system. It's a lot of fun trying to find the right one for you and your system.
Mort