Yes, the P8 is still in use and is competitive. Seriously, I could just live with the P8 as my only turntable, it is that good.
I also had a 313VTA on my Stabi Ref for a while and I thought that was a very good combination. I regret trading the 313VTA in for the 4 Point, because that marked the point at which I I began losing interest in the Kuzma. To be clear, it is a very good turntable and fully competitive with others in its class. It is still in production after decades and is used as a reference for a very good reason. The build quality of the Kuzma arms and turntables is second to none, and if there is a turntable that will survive a nuclear war or a zombie apocalypse it will probably be a Kuzma. But it majors in accuracy, neutrality and detail and is less concerned about fun, and I really needed to bring some fun back into playing records. That doesn't seem to be a priority for a lot of high end turntable owners, or "high end audio" in general in my experience.
The Solid 9 is the first turntable I have owned which competes with the Rega turntables on their own ground - timing, dynamics, musicality and engagement - and adds slam, bass depth, detail and tone. The Regas are also pretty good at these things, but the Solid 9 just does these things like no turntable I have owned.
I had read comments about the dynamics of idlers and the sense of density of sound and tone, but until I heard it from the PTP I wasn't quite sure what to expect. There is an
intensity of sound that is new and which I haven't heard from a belt drive. But having said that, I do still love the Regas and as I mentioned above, I could still live with the P8 as my only turntable. It is a genuinely high end turntable. I have used it with some top end cartridges - a Dynavector XV-1S, Benz Ruby, and Ortofon Cadenza Black and Bronze - some great phono stages - Naim Superline/Supercap (now sold), Rega Aura, Whest 40RDTSE and Tron/EAR MC4 - and the turntable can easily get the best out of these.
The ceramic plattered Regas - the RP10 and P10, both of which I have owned - I am less impressed with. I have written about these a number of times in this forum and while the P10 was almost there for me, I just couldn't live with it. The platter adds drama but also an odd colouration as well as somehow removing some harmonic content and I felt it just didn't allow notes to fully develop. But the P8 is near perfect. It has a natural tonality along with the great Rega timing and is seriously competitive with any turntable I have owned and preferable to many.
Some more photos (including electronic power supply):