Davetroy-
My experience was just the opposite of yours, but I didn't use Monster cable, nor would I. In fact, that was the cable I replaced! I contacted the Cable Company and got their top recommended HDMI cable. YES, there was a considerable difference, and NO it was not their most expensive HDMI cord. I stand by my comments - there are differences in shielding, connectors, etc. in HDMI cables just like any others, that yield differing results. There are also a number of people that insist they see or hear no differences when people in the same room do pick up the differences. Thats the difference in perceptions I was referring to, and that is by no means ridiculous - it happens every day in stores and shops across America.
I'm not saying, nor have I said, that there are NOT a lot of companies out there who try to take advantage of our desire to see or hear differences, because they DO exist. It takes some digging sometimes to find cables that make you happy and cost obviously does not necessarily equal quality.