Experience With Linear Tracking Turntables

The Mitsubishi LT-20 (or LT-22) linear trackers are excellent. They allow VTA adjustment, and they accept a standard SME headshell. This table with a moving coil micro linear stylus will absolutely wipe the floor with 99.9% of the turntables on the used and new market. 

I owned a couple of the B&O tables with linear tracking arms in the past (3300 and 8002) as well as the Technics SL-10. While I was very happy with all 3 tables, I kept going back to my direct drive tables with pivot tonearms, but like @lewm I came to really appreciate the B&O cartridges of which I have the MMC1 and 2, as well as a Soundsmith Carmen II. Now I use a PTP Audio table with two pivot tonearms mounted on it, and while I am still intrigued with linear tracking options, I don't see the need to revisit them.

I've been using a Walker Proscenium Gold since '96. Everything is still original and works fine. Just pay extreme attention to levelling and the arm will track friction free.

I am a fan of the Mitsubishi LT-30 or Pioneer PL-L1000 variants.  If you find ones that operate correctly. The only issue I have ever seen with the LT-30 is the tiny arm lift belt  inside the tonearm housing.  Pain to get to.  But both arms use a standard removeable headshell.  There are so many others to choose from.  I own many!  One word of caution.  If you are interested in linear tracking because you think they are in anyway superior to pivoted arms.  Stay with pivoted arms.  Linear

tracking arms bring a whole bag of issues with them.  But the fun and cool factors are off the chart!!  

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Yet another solution in search of a problem.