Cable for Hifi Man Sundaras

I just received these headphones after much research.  I have read that the weak point sonically of this purchase is the stock cable. I haven't had them long enough to make that judgement. However I do know that the cable that is included is really quite short. I am open to suggestions for a replacement cable from those who have these phones. I will need it to be 8 feet or so. With that in mind go easy easy on the price. Thanks.