VPI Classic 3 Upgrades or Move On to Something New


I'm the 2nd owner of a VPI Classic 3, bought here on Audiogon in 2014.  Cartridge is Soundsmith VPI Zephyr.  Considering giving it some new life with a JMW 10-3D Unipivot Tonearm, Signature Feet, and ADS Speed Controller.  Total upgrade cost - $3,950.  

Or...should I go in a new direction and give another turntable a try?  I have no complaints about my current setup, but don't have a frame of reference for what I might be missing out on. 

Budget for a new turntable/cartridge combo is anywhere from $5,000-$10,000. Thoughts? 
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I've owned a SDS, now an ADS. Wasn't able to compare for SQ. The SDS is easier to use as the ADS fine touch knobs are hard to get speed to hold steady. Both would come off settings made from a week prior by a little.

I have a Roadrunner/Eagle now that I'll soon set up. Hoping this package with the constant speed correction won't be aggrevating.
So ultimately I went big and switched to a Dr. Feickert Blackbird turntable with Kuzma 4-Point arm.  Currently demoing a My Sonic Lab Hyper Eminent cartridge, but have a Koetsu Rosewood Signature Platinum and a Soundsmith Hyperion on the way for demoing and will ultimately settle on one - can’t afford to keep two at that price level. 
At first I had a pucker factor spending that kind of dough but I find myself listening to music for hours almost every night instead of just occasionally,  The Blackbird’s speed is dead-on-balls accurate and for a belt-drive has great torque (due to two motors.)  Hard to describe the improvement in sound quality because I made so many changes to my entire system (phono pre, amp, cables) as well as the using a different tonearm and cartridge.  Needless to say the changes overall were not subtle. 
Sounds like the stars have aligned. It's always fun and eye opening to hear improvements in the system. How deep is the rabbit hole? Very. Enjoy!
Here's something to try.....take 2 dimes, put them on the record with no mat.... so that the dimes don't touch the spindle, but their heads face the spindle.   Put the VPI center weight on the dimes, and the peripheral clamp in place and tell me what you think