A butt-load spent in cables - how much improvemt?

We spend quite a bit in cables for our systems, I'm wondering how much overall sonic improvement we get from cables? Let me explain my thought.....

I'm very happy with my current cabling (IC's, PC's, digital coax, and speaker cables). I was thinking about removing ALL of them and putting in ALL the original stuff I started with (stock PC's, cheap Monster IC's, Monster digital coax, and Monster XP copper speaker wire).

Then listening to the system to see how much degradation in sound I would have. Has anybody else thought of doing this or has done this?