Help in deciding between these two cartridges for an upgrade

@tablejockey

Yep, I am using the integrated's phono section.  I heard the differences/improvements as I climbed the phono ladder to end up at an Audio Research REF Phono 2 prior to getting the GSi75.  I also had a REF 3 and REF 150 to round out that system.  I considered keeping the REF2 Phono but honestly was shocked that I didn't hear much of an improvement compared to the on-board phono.  It still surprises me and I would like another listen, but that is long gone.  I suspect one day I will return to separates but likely several years away.  Trying out another phono would make sense as I would have that head start on the move back to separates.  The REF 2 was gone by the time I got the RP10 + Apheta 3 so only heard that from the on-board phono.  

@rauliruegas

Thanks, I have always heard nice things about those cartridges but they are a stretch.  I mentioned $2k not as a budget but as the MSRP of those I was targeting.  I hadn't considered the AT brand, but will take a closer look.

@verdantaudio

Noise issues are a nightmare...good to know and hopefully that was an isolated issue with that particular cartridge.

"I heard the differences/improvements as I climbed the phono ladder to end up at an Audio Research REF Phono 2 prior to getting the GSi75."

dhite75-

My guess is your existing setup is very good as is. If you keep AT carts in your final choices, the ART 9XA is the way to go if you have 62 or higher MC gain. If not the XI @.5mv is the alternative.  . AT carts to my ears have the entire sonic spectrum turned a couple notches up. If your system needs that AT definitely should be considered. I use both.

Kiseki to my ears is closer to having an overall tone control at the middle detent on a classic tubed receiver from the 50/60's if that's your taste. That's mine.

No bad move either way in my experience. I have all all tube(integrated)  to speakers as you, just separate phono.

The new Benz Micro’s with the MR stylus is downright killer. I have a Wood SL MR running into a Sutherland Little Loco that slays my Soundsmith Sussorro mk ll. 
Of course, once one jumps off the voltage gain phone stages and converts to current gain stages all the fiddling with loading/gain goes out the window and a new panorama opens up. 

@nmmusicman Well, that is a good way for me to redirect my funds to a patio and leave the stereo alone!  You know, I have been having my doubts over the weekend since I did love the move to the Benz.  It was a $1600 cartridge new so I am basically in the same price bracket here.  I understand that a different design could offer someone advantages even at a lower cost and I will never know that until I try something else.  

Thanks everyone for your thoughts.  I learned of a couple more nice options here from your input so now it is on me to decide.

LP Tunes has the Art-9 for sale at $999.00. Its a great cartridge that performs way over its price point. I loved mine until the cleaning lady snagged it with her dust cloth ... after I told her not to touch anything beyond the speakers.
https://lptunes.com/collections/cartridges-hifi/products/audio-technica-at-art9-phono-cartridge?vari...

Whoops ... I just noticed that LP Tunes is sold out of the ART-9s. Sorry.

Frank