Preamp caps Jupiter copper foil or Jupiter HT worth double the money?

I like the MIT Multicap RTX, which are styrene and tin foil. They sound very neutral to me - better than various teflons which I tried - and half the money.

Good luck.

Only Jupiter caps I have left are the beeswax  1.0 uf 600VDC (2 pairs).  One pair is much larger than the other. Go figure!

Many years ago, I had Multicap RTX in my 300B SET amp. Then I changed them to Audio Note Tin foil. Despite RTX weren't bad, AN where more natural, detailed and smooth.
Recently, I changed AN Mylar Copper to Jupiter Copper in my phono stage. The difference was significant. Jupiter Copper has more transparent and even sound.

IMHO phono stage or pre-amp output capacitor is a bottle neck of audio system. Especially if pre-amp doesn't have a global feedback. So, buy the best capacitor that you can afford for this system. This upgrade is always win-win.

I agree with bottle necking. I found that out with cap upgrade in speakers. This is new to me changing caps but the results were pretty big in my system. I put CRM, Alumens and path resistors, they replaced Auricaps and was shocked how quiet and refined speakers became. That is why I'm doing Preamp which I've never done. I think Juniper copper may be best bet for me. Partsconnextion is out of copper value I need. Talked to Jeff at sonicraft if I heard him right he's fading out Jupiter and does not have my value. He is selling the Miflex and seems to really like them. I don't know much about Miflex but I never heard any of these copper caps including the Jupiter, buying blind.  If I have to throw a dart at the board Im going for Jupiter copper, but all these copper caps have to good right? They must be better than what's in my amp now, Infinity, Rel and Solens. Changing caps in speakers changed character of the speaker for the good, I was good with that but I don't want to change character of my preamp. I like how it sounds just want it more refined, the amp pulls all the detail I need. Anyone compared Audyn and Miflex to Jupiter copper I'm just curious what you heard. Jupiter is only $100 more and sounds like most people like it.

Miflex is better than what you have by a good margin as are All copper foil caps.  You are right. If Jeff says the Milflex are great, then they are great.  He knows his stuff and can be trusted 100%.  Humble Capacitor Review says they sound more forward than the Jupiter and the Jupiter sounds more rich. I would buy the Milflex and parallel with the Duelund .01 tinned copper bypass caps.   For the money, you won’t do better!