Hi Geno,
In general, I am a HUGE fan of the Jupiter Copper & Foil (aka Type II) capacitors.  And there are plenty of others in the wild that feel the same about these caps.  

I have them in several of my Decware gear and can't speak highly enough about the improvements over the standard Beeswax (Type I) that they bring - at least in my system and considering my sound preferences.  

If you were considering upgrading, I would say that it would be a sound investment.  

Cheers,
Jeff