I've had my Sota Cosmos on a few different platforms....ALL affected the sound differently.
The MDF was quite poor,in that the sound was rather "MDF'Y"-:)It was sort of deadened,and diffuse compared to my second move,which was a pricey air bladder design.
I have my table mounted on a superb wall shelf,mounted into two by six beams.I am talking of the actual shelving material,and how it clearly affected the sonic spectrum,in my set-up only.
The air bladder design,allowed me to disengage the Cosmos' sprung suspension.I was quite happy with this configuration until Sota did a complete redo of the springs.My friend got "these" new suspension springs first,and they were quite different from what folks knew the older Sotas to be like.Formerly they were way too springy,but now they were quite stiff,with almost NO bounce.
I still seemed happy, the old air bladder way,until I decided to get the new sprung suspension,and "this" made me try it with a Symposium Ultra Shelf,instead of the air bladder.Of course I now disengaged the locked up springs,and went the normal way of using "this" new suspension.
The difference,to me,with my usual LP suspects was absolutely dramatic!!Now it appeared I had a "serious" and well tuned suspension,that did not bounce around,and allowed for the Ultra Shelf to do it's job.The Ultra Shelf is a fabulous support,and significantly outperformed the air bladder(both not cheap,btw)in this new configuration.I had a significant increase in bass performance,and focus.
One thing(my opinion) about all this business of "perceived differences",whether they be material choices in products,or set up choices made by the hobbyist.....
You'd be very well off to make a serious attempt to hear/listen carefully to your "best" LP's on a multitude of top systems(not really hard if you make the attempt to bring them along to the "few' better dealers,trade shows,and especially fellow hobbyists' homes)in an effort to absolutely know how "music' is presented with such a plethora of sonic viewpoints,from different components.
Now you'll have a better idea of how the different instrument combinations should sound,and if a future component is not up to snoff,it will be very obvious.
You'll know for sure,without having to post a question on an audio forum.
Viridian...Hope this makes some sense -:)
Best