jbrrp,
There is a German firm ( The Link can be found on; " Outer ring- who uses and what are your findings" post by melm on 07-15-2018. )
I am going to pass on using an outer ring; Too futzy for me.
As I just posted to bluewolf; I am going to focus on Flat and Relaxed records next.
As "Ralph" has pointed out, the Triplanar bearings are in the plain of the record.I have a few used records that have long warps or a sudden edge warp. The Triplanar has been handling these with ease. I do have (1) record that has a sharp edge warp that does get a jump in the first couple of grooves out of the Triplanar, but that is it. I have been fussy about my records from the beginning. But even average flat records do have small undulations. Every tonearm must deal with these. I think making the tone arm cartridge combo work even less, even at the micro scale, gets us better SQ.
Flat records will have the best contact with the mat from the start. A mat and weight should effectively deal with groove resonances and give firm contact with the mat. Just my opinion.
I heard the speed control of the Technics within minutes; at Axpona 2016. I knew that I wanted this TT. The stock arm is good, but the Triplanar just brings the rig to a new level. I agree, piano is fantastic, bass is deeply defined and textured, images and spatial information are solid and layered.
Thanks for your response and enjoy your rig.