Interesting thought- Linn &

Well folks a Dual  1219 would be fun too. It's just about now I wish I never sold my V15 Type 3

Pasinee, on Youtube, has recordings of a Radikal LP12, albeit with maxed-out arm and cartridge, if you want to hear one.

stingreen, VPI and Linn are two different camps. I have not heard the Prime but I have heard many of the other VPI turntables including the popular "classic". They are very different from Linn/Rega/Roksan camp. A top shelf Linn LP12 with Radikal and such remains a reference TT even today, used by many reviewers and serious analog hobbyists.

As one who recently traded an LP12 for a Rega RP10, I did try a Classic 3 with the same Kleos mounted and similar electronics. I was immediately aware that the LP12 had a much more musical sound than the VPI, to my ears at least. I decided against the VPI as I realized the departure from the Linn would be too much in one step. However if you want to break away from the Linn, the VPI is a consideration. But as you mention you're very happy with the Linn, I think all the upgrades Linn offers, only enhance a great sounding table each to a new level. It is an expensive journey should you choose the Linn upgrade path, but rewarding at every turn. The dealer AudioAlternative.com has a number of LP12s in various stages of the Linn upgrade progression, and each clearly reveals the benefits of the investment. I like my new Rega, but miss the delivery of the LP12,  but not the suspension issues on a suspended floor. Had my sound room been in the basement, I would most likely have kept it, and at lead have added the Khan, the only non-Linn upgrade the dealer recommends. You might give Rick a call and seek his advise and ship your table to him for the upgrade of choice. As mentioned before in other threads by myself and others, Rick at audioalternative.com in Ft Collins Colo., is an LP12 aficionado and has a passion for tuning these tables. 

The Radikal is a $4250 kit.  I'm not taking sides here, but a fairer comparison would be with the VPI Prime supplemented with an SDS or even Eagle speed controller and 300 rpm motor which would improve the performance in a way that's easy to hear.  Fairer still would be the addition of the single unit motor-flywheel that has not as yet been released for the Prime.  Surely the two systems make different presentations and it's for the listener to decide.  Disclaimer: I have used VPI products for many years.