I currently run WEL for all of my main leads including a balanced 12M length of interconnect from Pre-Amp to Power Amps. I had previously also owned a similar length of WBY, there isn't really a comparison. The WEL has more heft and depth that the WEL lacks alongside it sounding rather thin in comparison. It's not a matter of emphasizing or deemphasizing part of the frequency range but more that with the WEL the instruments are more filled out. They're both good cables but the premium for the WEL is justified and you will also own a cable that your system can grow into.
I also like the WEL power cords a lot but have never compared mine with WBY.
I am however not a fan of the WEL speaker cable -- my thoughts on this have been recorded elsewhere but for my money its's over priced for what it delivers -- I've no experience with the WBY speaker cord
Finally I've had extensive experience with WBY Digital cords, they're good (probably with a similar sonic signature to the interconnect) but easily bettered by Transparent Reference XL.
I also like the WEL power cords a lot but have never compared mine with WBY.
I am however not a fan of the WEL speaker cable -- my thoughts on this have been recorded elsewhere but for my money its's over priced for what it delivers -- I've no experience with the WBY speaker cord
Finally I've had extensive experience with WBY Digital cords, they're good (probably with a similar sonic signature to the interconnect) but easily bettered by Transparent Reference XL.