I honestly don't feel it's worth it, nor do I feel it's better. It's the plates that wear, not the balls. Also find the ceramics a bit harder to adjust.
I recommend sanding down the plates at each rebuild with #600 paper and WD40. Do it until the groove is gone, in a "star" motion. Beware that new plates are NOT perfectly flat!!! Then clean with brake cleaner. I replace the steel balls as they cost very little.
There' also the B-Fast stuff with machined plates if you want the plates 100% flat.
Also recommend to break in the diff, with a loose setting. Then gradually tighten.
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