During the past few years, I've talked to a few techs. Two of these techs use mid grade Nichicon caps. They say they used to use higher end Blackgates and audio grade Nichicons. But, they claim audio grade caps and mid grade caps only sound different at first. Eventually, after some time, they sound the same. Supposedly, the technology advanced so much that even midgrade caps are now considered higher end? So, they only use midgrade Nichicons now. It also lowers their cost as they don't stock as many caps. And, the reliability are the same too.
What say you?