Well, the cable you made (see:
LINK) is certainly handsome and very well done. I expect it must have been the beneficiary of materials and tools on-hand to some extent to build it @ £110, but again well done. I may get up to a project like that sometime - I do at least have a soldering iron, heat gun, and multimeter - but for starters I was thinking I might reterminate that double-ended balanced cable for the pha-3 that comes in the Z7 box, with a pentaconn plug. Maybe, I dunno. It definitely isn't going to see any use otherwise. But as for a ready-made, near equivalent commercial solution for me here in the US, like for example a Moon-Audio Silver Dragon, with the appropriate connectors it is $360 + tax. Over at lqicables, their Claris series silver cable would be $430 + tax. So I'm happy with the choice of the Sony/Kimber @ $200 for now (if I were trying to buy that cable here in the States on ebay or amazon, $275-$325). If it turns out to be not to my liking for some reason, I'm sure another Z7 or Z1R owner here would be happy to take it off my hands for a reasonable sum.