RCA chassis connector

[Nounours18200]

I build a non-compromise attenuator and i am looking for the best RCA femelle chassis connector.

The rumour around tells that probably the best ones are:

-the AUDIO-NOTE Teflon isolation / Ag plated (Ref.: AN-CS).
-the CARDAS (Ref: GRFA) gold plated on rhodium, which can be seen there: http://www.diycable.com/main/product...roducts_id=406

and maybe that the non-brand RCA with Teflon insulation available at the electronic shop around the corner are as good as these expensive ones...

What your recommandation would be: Audio-Note, Cardas, or a non-brand Teflon isolated ?

Thanks