I was told that the difference between Black Label 2 and Black Label 3 is just the shielding!! Not sure what I hear is correct!! If the damping factor of yr power amp is not so high, Black Label can enhance the bass control of yr power amp. Anyway, there is no cable or powercord which can fit well for all setup!!
In my opinion, it's unwise to buy a gears which need high price cable or powercord to get good sonic performance!!
Let me tell u a joke, I find that the sonic performance of a pair of Kimber Hero (<2k) is much much better than a pair of Nordost Valhalla (>20k) at my setup!! It proves what!? The most important is still matching!!
I don't mind to buy high price cable, but it needs to bring u a HUGE sonic improvement!!
Both Siltech Compass Lake and TaraLab The Zero can bring me this feeling!! However, its price is crazy!! Out of my budget!!