I have FAW Color Series for akg q701 and was hugely impressed with the build quality for the price. Matez was easy to deal with when I wanted to change to Furutech 6.3mm jacks after ordering. I also have a Claire FAW cable for my Hifiman HE-500s. Immediate and noticeable improvement in sound...

I think from my limited list of phones used and owned that Sennheiser HD650 and Hifiman HE500s had great detail and particularly the 500s a good wide soundstage and instrument separation.