If you want the best, then consider using Clarity TC film caps. Get the Kelvin style 4 lead out version. Simply fantastic in tube amp power suppliers. No need for electrolytic caps if your amp is tube rectified. I find ridding my tube builds of electrotylics really opens up the sound.
Electrolytic 4 poles Jenson vs Mundorf
any members tried both caps and did any comparison between the two caps. Please advise?