Jim,
Don't forget the Caddock line.

I personally have not compare them to Vishay. But I know that they are better than the Dale, Halco and Roderstien.
I have some in my Audio Note M1 Phono pre and Welborne Lab Apollo 1.5 SET amp. I use mostly the MK-132 in the signal path. And I do have the TF020 lower watt (.33) in step ladder volume control (all with Holco) as a pre-attenuation and it is very tranparent... more so than the MK-132.
They run from $4 to $11. So, I think they are a good alternative to the Vishay. Are they the same or better than Vishay? I don't know. I wish I have time to compare them.
Take care,
Buddy
