I was a long time user of Harmonix and now have been a long time user of Transparent. Harmonix are great budget interconnects and cables and Transparent is a great provider of audiophile interconnects and cables. Huge difference.
If you have great budget high end gear, then harmonix is great.. if you have true high end gear… that will sounds best with Transparent. Transparent is exactly what it says… if you have truly high end gear that is what you want… nothing in between. If you have lessor quality stuff, then a bit of relaxation and warmth is in order… Harmonix.
However, I have heard that Harmonix quality in construction has fallen. Not a huge problem… be careful with the connectors.