I sell alot of the Monster cable at work, and I ALWAYS take them apart to see what they look like, and there's nothing special to the Connectors or soldering job... honestly I like mine better.
The differences I think are the % of shielding and the gauge of wire, and if they are twisted... For XLR I thought this was important? I don't know, but the kind I made were only unbalanced, so didn't really matter.
I bought 100' of 85% copper shielded coax 18 gauge stranded copper (roughly) from parts express, and those 6$ a pair connectors, I made like I think 6, 16' runs roughly... barely made it to my trunk, I really wish I had made them all 20' long and just bought more wire.
It ended up costing me like 6$ x 6 + ~50$ for the wire = 90$ for 3 pairs of unbalanced... it's obviously going to be more for balanced, but if you can run balanced, obviously use it.
I would never pay a hefty price for wire rubbed on the A$$ of a Pixie, for the ultimate in high fidelity... (avsforums quote). That was the best line ever, someone was comparing the price of cheap cabling vs. super expensive...
I sell the expensive ****, I sell the relatively expensive monster ****... Is it worth it? maybe, it's better than the 20 gauge radio shack stuff being soldered and all... If you keep the wiring forever... maybe it is worth it, but you can save yourself a bundle, and IMHO it's just as good...
However I would reccomend against RG6, I used that in my wife's install because the crimp type RCA connectors were the only ones available at the time, now they make it for RG59 which is slightly better, but I like the flexibility of the stranded vs. a solid core and copper tinned or just plain tinned wire. I think the "guitar signal" cable is a better wire for RCAs than the Cable TV app... Just my thoughts