With all of the recent talk about the MC-0.5s and their great effect for the money, which I agree with, I forgot how much of an improvement it makes jumping up a level of cables. I just sold my U speaker cables to apply toward a purchase of UR speaker cables, and the improvement is startling. Big, immediate, and dynamic. So as usual, you get what you pay for. I can only imagine what the Pro cables sound like. In the meantime, more MC-0.5s here I go.