Mundorf supreme /silver line. BUT, they are expensive and one MUST finalise the value required before purchasing. It's too expensive and not worth experimenting with.
Also, the differences between say Mundorf and dynamicaps and some of the (v. good) Axons, etc, ARE there... BUT: IME, the cap won't magically transform a Tangbang, excellent though it may be, into a Lowther PM4 or a Supravox 215 field coil.
I think good quality, "honest" caps make the difference; going (financially) overboard is not always necessary!
Also, the differences between say Mundorf and dynamicaps and some of the (v. good) Axons, etc, ARE there... BUT: IME, the cap won't magically transform a Tangbang, excellent though it may be, into a Lowther PM4 or a Supravox 215 field coil.
I think good quality, "honest" caps make the difference; going (financially) overboard is not always necessary!