Well, I have heard all three (well there are more than three, but the top three).
Not matter which you pick, it will be a lot better than the stock.
my mini reviews :
Clou 212 Red Jaspis Cable = This cable is like the stock on steriods! Higher highs, lower lows, lusher mids, bigger soundtage! Just more of everything! It is pretty thick and stiff.
Stefan AudioArt's Equinox cable = Black and sleak, this cable sounds very smooth and relaxing. It is no where as detailed as the other two cables, but it is a hell of a lot more forgiving than the other two. The cable is thick but flexable.
Cardas (smuf) Cable = This cable is neutral and smooth but very detailed. Not as dramatic as the Red Jaspis , but more balanced in it's sound. The cable is thin and very flexable. It has been nickednamed the smuf cable, due to it's light blue color.