Actually Oyaide is probably the most respected manufacturer power cables/accessories. Apart from Mogami, Belden and Supra makes some great DIY stuff too. If you really want the ultimate in Japanese high end cables (or pretty much any high end cable) you will have to go to Acrolink. These are built with only high end performance in mind and ofcourse are priced that way too. We have used one for a high end project a while back.
On the RCAs, I dont have spare WBTs around, I do have some higher end Cardas RCAs and Eichammann though but they dont come at the $18 level
For the females, the Vampires are better for the money, for the males, WBT, futuretech, cardas will all work. If you want the best go with Eichmann bullets. I will be getting Audio Art RCAs shortly, which are OEMs made by the same shop that makes one of the above (cant say which
) which are great value at roughly $10 or $11 each.
Reignofchaos, I think you heard the Mogami speaker wire right ? or was it only the IC that you heard?