You can pick up some reall S/H bargains, as the market is flooded.

My own experience has been that only a few of the values in a couple of the ranges work, and only for a few applications.

The 0.1 50v BGNXHiQ, is a bit of a wonder cap that seems to work in many applications, and sounds better than any film to my ears.

Here are the ones I have liked:

Non Polars:

4700 @ 50v (black body used for analog supply)

1000 @ 50v (black body used for analog supply)

100 @ 160v (black body used for analog coupling, decoupling, bypass)

10 @ 50v (red body used for analog decoupling)

0.1 @ 50v (blue body used for almost any analog app)

I have not been able to get any of these to work with digital!

Polars

I have found that the FK range can work well for digital supply, but are not anything special on the analog side

I also like Nichicon's, esp the large Great Supply caps.

This is an area I have not experimented with. What difference does it make?

Regards

Dave