XLO Signature and Reference Interconnects

I have a dealer I know well that has a back stock of new XLO Reference 3.1 and Signature 3.1 cables, the Reference in particular he is keen on selling at a great price. I know they have a great reputation and are OCC copper, but I've never listened to them before.

Before I go through the hassle of borrowing the cables and giving them a trial, can anyone with experience give an opinion please? Thanks in advance.