Best Vinyl Bach - Solo Cello Suites recording?

I purchased the Speakers Corner Starker, thank you all for advice.

Thanks for letting us know, Jeff1225. Hope you enjoy!
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The Starker set on Mercury is exceptionally well recorded. The Speakers Corner reissue, still available new, is very well done. The sound is immediate, with high impact. It is relatively closely miked, so there is not a lot of hall ambiance in the sound field. What you get is the sound of Starker and his cello sitting immediately in front of you.

For another beautifully well-recorded set of the solo sonatas, there is the Helmerson recordings on BIS (LP5, LP25, LP65). You'll have to hunt the used market for these three records as they've not been reissued. The Helmerson performances are more distantly miked and capture the wonderful reverberation of the church in which they are performed.
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The Rocco Filippini recording on Fone is a fine recording. The performance, however, is in a style of strict adherence to meter and it loses my interest rapidly. Color me a bit disappointed by Filippini, but I like his Haydn concerto on Fone.

The Starker, Helmerson and Bylsma performances are much more interesting to my ear.