Just to be more clear, when I wrote that the Lenco with everything properly adjusted but still in its stock box chassis would outperform the Sota Sapphire, I meant table vs table. IMO, the Lenco tonearm is best avoided. The Acos is a very good upgrade.
My early 90s vintage Sota Sapphire III, with vacuum hold-down, was just not as good sounding as my formerly stock Lenco, before I modified it, table vs table. I could go into specifics if needed. In fairness to Sota, by all accounts their more recent products are far superior, because of basic changes made to the motor mounting, etc. Perhaps Manitunc is actually referring to units that are more recent production than mine.