Pro-ject Xtension 10 vs. VPI Prime vs. Amadeus


I have a Well Tempered Amadeus currently, which I have owned for 2 years, and been fairly happy. Just curious if one of these new high mass turntables would be an upgrade, and if so, which one?
Particularly interested in hearing from someone who has compared the Xtension 10 to the Prime.
dbarger
The Amadeus will be hard to beat. I had a Nott Spacedeck prior to mine and the Amadeus made it sound broken.

Shakey
For 3500, the VPI Prime is hard to beat. The 3D arm is one reason it's called Prime. The VPI tables are reliable as Hell and do not need constant tweaking. They sound like music.
Just a minor correction regarding the VPI Prime, while it was initially introduced at a special $3,500 price it has been $3,800 since the beginning of 2015.