upgrade VPI HW19 Mk IV or get a new table?

I have an HW19, though not sure which version. I upgraded it from the original model I bought in the 80's. It has the SAMA, thick arm board, acrylic plinth, and thick black platter (not the acrylic/aluminum one that I think would make it a iv). About 15 years ago I replaced the springs with sorbothane pucks (remove the metal rings) and got a slight improvement, the music being a little less laid back. The change required no shimming of any kind as the height of of the plinth was perfect. I have about 8 pair of these pucks and use them on everything. Walker uses sorbothane to isolate his turntable platform so the stuff is still available in some form, if not the pucks.

Good isolation is really important perhaps use a wall shelf if you can or have it mounted on Buthers Maple board
I am waiting for VPI to send me the super scoutmaster plinth to replace my old HW19 Chassis and will also get the rim drive and SDS in the process I am keeping my super platter I have the lead version which is just as good as the super platter. The main reason VPI no longer makes this is because of laws around using lead not because of sonics
Its possible to do this in stages if you have the SAMA motor the Super scoutmaster chassis is actually quite reasonable $350 and in theory should be better than the HW19
I have a friend who is making his own chassis out of slate and using the Verus motor by Teres, its also possible to get a plinth arcylic sandwich made
I think the HW19 is a really good turntable and no need to go down the same extremes as me but once everything is put together and bedded in I will compare the rim drive with the Verus and report back and also let you know my thoughts around difference between the HW19 mk4 and Super scoutmaster

I look forward to hearing your thought on the rim drive vs the Verus motor.