Joe, your equipment is good. It's possible your dealer has another line of cables to try. It's very likely you will hear more difference trying a different brand. Also, cables have a "compounding" effect; the more changed the more you can move toward your desired sound - that is, if you like what the cables do.
Note well: It is definitely NOT necessary to spend inordinate amounts within the same cable line to achieve a much different sound. Different brands have sonically quite different "house" sounds. Many times the average priced cables of different brands will sound significantly different. This is why I suggest an alternative brand to compare.
Note well: It is definitely NOT necessary to spend inordinate amounts within the same cable line to achieve a much different sound. Different brands have sonically quite different "house" sounds. Many times the average priced cables of different brands will sound significantly different. This is why I suggest an alternative brand to compare.