Duelund cast Pio Hybrid Copper/Silver or Rs series with Silver Bypass PIO

Jupiter caps are excellent and are the best "bang for your buck" brand. The Flatstacked series which I'm familiar with has a natural tonality and open soundstage. 

I would not think the Rs is comparable with the Jupiter copper series.   The cast duelund to me sounds better than the jupiter copper series.   Has more organic, lively and romantic sounding.  

Hello.
So which one sounds better in the crossover - Jupiter Cu or Duelund RS?

I have seen little mention of the VH Audio Copper- Teflon caps I have been using 
these and for resolution none better ,but take up to 4-500 hours runin time.they are flighty warm ,but not much speed and resolution
for a bit more air  and  depth the Duelunds are vest 

They are nice, but not my particular cup of tea. Just a tad too thin sounding vs Juputer or Duelund CAST.