Recommended a highly resolving cartridge

I'm onto @ hour 15 with the ART20 - I was curious to see if I was just in a honeymoon phase initially when I posted my glowing review and can easily say nope, this cartridge is phenomenal. The way instruments/elements emerge with clarity, dimension and presence is unlike anything else I've heard. All while having a superb evenness across the frequency range with outstanding bass and HF that is clear but not shrill, piercing or anything less than enjoyable. Mids are perfectly realized. I do think the fact that my system is on the warm side of things helps, it's possible this cartridge on a brighter sounding system might not be the best fit. An interesting note is that after the first hour of listening I think the cartridge was basically not far from where it is now many hours later sonically. Perhaps it's a tad smoother but I can't positively say that's true, the overall impression I have today is identical to my thoughts back when I first got this cart. I'm going to live with the ART20 until I hit @ 20 hrs then I'm going to go back to my beloved Grado Aeon3 to see how it hits me after this experience. My Koetsu is being sold. To be continued! 

Give the ART 30 hours minimum. That’s fair also. otherwise you're comparing a well run in cartridge with one still new out of the box. Less of an Apples vs Apples comparison. Take that variable out by running in the ART.

Ok thanks for the suggestion 

Highly unreasonable expectations from a cartridge upgrade (might as well ask the cartridge to make a chicken sandwich while its busy deepening the soundstage by 20 ft)...

They’ll have to make a cartridge out of fairy dust for this and the prize shall be a million dollars. Dartzeel made one for a million dollars just for the OP.

I’m looking for a cartridge that offers high detail / resolution and wide / deep soundstage.

@deep_333 One of my favorite expressions is "those who say it cannot be done are usually interrupted by someone doing it". The ART20 satisfies this easily FYI.