Preamp Output Capacitor: Mundorf Supreme vs. Supreme Silver Oil

Does anybody try to bypass Duelunc Custom Cu capacitors 
with Duelund Bypass Sliver or Duelund bypass Cu-Sn?
How does it work?
Which kind of  Duelund bypass do you prefer?

@atmasphere Yeah, I had them in the pre for a couple months of daily listening... would still love to try the cutf and odams.

@alexberger I had the duelund silver bypass caps in my coincident Frankenstein’s (but only over the stock solen coupling caps) and really liked them. Could not hear any difference over the stock output caps in my pre though and sold them...

I have used and continue to use the Duelund silver and Sn-Cu bypass caps. Both are great. I find the Sn-cu, like the main Sn-Cu cap, are the best caps out there. They are simply beautiful sounding with all the detail and openness one could ever want, but served up in a natural and unforced manner. They also have great body and weight which is my only knock of Teflon caps which can sound colder and a tad leaner. 

The Vcaps have a sound as all caps do. I am also trying the combo of ODAMs bypassed with Vcap CuTF. I don’t expect them to sound as good as the Duelund Sn-Cu, but we will see. I am sure this combo will deliver clarity in spades, but will that have that wonderful tone and beauty of the Duelund Sn-Cu? I have my doubts.

Yeah, I had them in the pre for a couple months of daily listening... would still love to try the cutf and odams.

The Cutf is really the only part we've been playing for some years. My comments are based on them. We installed the ODAMs in one of our preamps (UV-1) and they were quite nice.