I have owned many tables Including a PS-X60 & PS-X70, Kenwood L07-D. I’m refurbing a Technics SL-1310 Mk2 right now. I’ve never heard the PS-X9, so it may not be fair of me to say. With the much better power supply and heavier platter and Isolation throughout, I would assume that it is more refined that the very nice PS-X70.
In every case, on my old direct drive tables and I’ve had several, I always tend to dampen them throughout, make sure all caps are replaced in the power supply and tend to dampen when I can around the supply to help isolate vibration/resonance from the rest of the table, in one case, I put heat shrink dampening on the tonearm with good results.
I’ve never spend more than maybe 5 or 600 dollars on the machine before my work.
Of course, I could be totally wrong because I haven’t sat in front of a PS-X9, but my instincts are that you could snag several top of the line consumer tables of that era and with some work, have a fine piece of gear for peanuts.
I suspect that the PS-X70 had the same family flavor and with some work, it is really a nice sounding table.
Right now there are a couple of Sansui SR-929 floating around, I’ve not played with it, but it looks like it would also perform admirably.
Bottom line, what I am saying is that you can most likely grab 4 or 5 of the old legends of audio and end up with a VERY satisfying table and if careful in your purchase, you could easily move the others that you don’t keep without any loss.
Check out the beautiful Sansui SR-929 on ebay for $1200 obo.