Tube Amp, Preamp upgrades -- what did you do that improved your units?

Yes, the EVO line is not as tipped up. Agreed.  I have used them in crossovers where I needed larger values and had little space.

Look at Miflex films as a competitive alternative to Jupiter/Dueland. 

"@grannyring ...You can use the Odam 2.2 uf there. In this output position 2.2uf is perfectly fine. This position is not the same as the stage coupling caps we discussed not changing the value of."

grannyring, interesting, I wanted to ask you about this for hilde45 if you felt jumping from 2.0 to 2.2uf was okay or not for the QS LS. Not seeing a lot of 2.0uFs out there any more like the old vintage stuff.  Good to know. 2.2 it is!   

Thanks and I'm glad to see some agreement about the non-oil Mundorf SG's.
It's confusing enough to choose between brands, let alone there being such differences within a brand.
And, as opposed to tubes, once these pups are soldered in it will be a harder call to reverse them.

Don't know if you're aware, but Humble homemade has reviews on most top line caps, will give you some idea of sound qualities.
I don't think you can go wrong with any of the top rated copper films, the Mundorf Evo might work if you didn't go with silver internal wiring. I'm just thinking you're looking for spaciousness, more extension on top, reason for silver. You also may not need any silver, that's up to you.