Improvement upgrade VPI TNT Jr platter to TNT

I upgraded my VPI Arries 2 platter to TNT Jr. platter which was much heavier. I heard noticeable improvement on bass, image, focus, and separation. The TNT Jr. platter fitted right onto the Arries 2 bearing and spindle. The Arries 2 bearing and spindle were much better made with plastic bushing than the TNT Jr. bearing and spindle with bronze bushing. Has anyone upgraded TNT Jr. platter to newer TNT platters and how was the improvement? Thanks