Hello,
I had VPI Aries 3D. With single motor flywheel, ring,hrx weight. I upgraded to 10 inch dual pivot fatboy which improved sound. Later Upgraded to 12 inch dual pivot fatboy , avenger ref feet and magnetic drive. Each step -I noticed improvement.
I would recommended trying to get the Fatboy. I prefer dual pivot over gimbal.
Classic 3 maybe a lateral move.