One Super high end cable or mid level set?

Thanks so far for the reply's.Just to be clear I'm not asking specifically in regards to my own system. I'm perfectly happy with my modest all Supra loom. It's just a question I haven't seen raised a lot. I was hoping to hear more from those members who both own and obviously believe in the worth of these top of the range models (from such respected companies such as Siltech, Cardas and MIT etc.
Here's another type of example I was thinking of.
How would a set of Cardas 'Clear' speaker cables matched with sets of Cardas entry level 'Crosslinks' interconnects and power cords actually perform ( again on a suitable high end system) as opposed to a complete 'loom' of the mid level Cardas Cross range? Has anyone who presently owns ( dealers of course would ) a 'low' , 'mid' and 'high-end' cables ever tried this type of experiment?

My question is addressed of course to people who have found a well matched 'make' for their system and is in regards to the choice of 'models' from that 'make'.

I know exactly what you mean and I will probably end up doing the same thing as you ( and like most others) if I ever decide to upgrade.
But conversely maybe as Pani's excellent posts to my initial question suggests the alternative might in fact , in certain situations work equally or even better for a similar outlay.

Edit, my last post was in response to Jedinite24 comment.