Someone may have said this already, but I'd do an eBay Search for "Russian Teflon FT-3 capacitors" and then look for listings by Ural Spirit. Real name Dmitriy, and in my repeated experience a great guy to work with. Buying a lot reduces the price (counting in the shipping) per cap, making them very cheap, and IMO they sound as good as any cap I've used, including Mundorf Premium Silver/Oil. I've even made a clear improvement on a fancy pair of Black Gate caps, one of the fancy types, F or K (if memory serves), by using 0.1 uf FT-3's as bypasses.