upgrade VPI HW19 Mk IV or get a new table?

I had a VPI mk4 that started as a VPI Jr. I gradually upgraded to the mk4. It was a very good table, but I ended up selling it to buy a VPI Aries 2 with the JMW 12.5 arm. This was a huge improvement in my system. The non suspended Aries 2 is much more dynamic and has much more of a live sound. The mk4 is much more of a laid back softer sound. I did not really notice it until I replaced it with the Aries. By the way, I had the JMW 10 arm on my mk4 (so to answer your question, you can use the JMW on the HW-19 table).

I adjust VTA by the thickness of the LP on my JMW arm (this is easy to do and can be done on the fly with a turn of the knob on the tower of the arm). The difference in sound is substantial (to the point that if I forget to make a proper adjustment, I can immediately hear the difference).

"It's just that I wonder if I am missing out on something"

This is what keeps the audio business going.

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