Shelter 90x on a Systemdek IIX ?

I am thinking of purchasing a used Shelter 90x ($1k range) to replace my Denon DL-103 on a Systemdek IIX. Any thoughts?

My system is:
Systemdek IIX with DL103
Jolida Envoy preamp with phono section
Canary Audio CA-301MkII tube amp
Synergistic Research Designer Ref cables
Acoustic Research AR-9 speakers (1980's model)
Marantz SA-1 cd
Nakamichi Dragon cassette
Yamaha CDR-HD1500 music server
That is a great cart. I had one and regret selling it. I also have a Systemdek IIX but I never did try the Shelter 90X on it. I used mine on a Nottingham Dais and loved it. I tried something else for fun and I've tried some other things as well since and never found quite the magic of the 90X.
I have owned, and really liked, the Shelter 90X, (although it was on a Basis 2001, with a Vector arm). It is a great cartridge, and quite the bargain actually. It has incredible bass response, (tight, quick and deep). The mid-range has a nice touch of warmth, and the treble response is well extended. It is a great bang for the buck cartridge, and easily in the Stereophile Class "A" category.

There are only two downsides to it that I found:

One, is that the treble, (while very good, and well extended), is not as refined as some of the better (and waaay more expensive cartridges). I am being very nit-picky about that, so don't let that worry you.

Two, the background is not as deep, dark and black as I would have preferred. (FYI: It is good in this regard, but just not great.) This was my major concern with this cartridge actually, as I had gone from the Koetsu Rosewood Signature to the Shelter 90X. One of the strengths of the Koetsu line is their deep, dark, black backgrounds. However, I lived quite happily with the 90X for a couple of years before I finally decided to upgrade to my current cartridge, the Dynavector XV-1S, (and that only happened because my friend was upgrading to a Brinkmann/EMT setup, and I got a great deal on the XV-1S).

For $1,000, assuming it is in good shape, this is a no-brainer of a decision. Good luck with the 90X. I am sure you will enjoy it.
Having had a similar setup in the past the Denon DL-103 and Systemdek are probably more suited together. Often components may work best if evenly matched.

Having said that and having loved my Systemdek I was astounded at the difference when I changed to a modern table.