Yeah, no.

Nobody makes high quality cassette tape mechanisms. It doesn't make sense to make ten of a custom cassette tape mechanism, only at least tens of thousands, so, they don't. But the market for thousands of these mechanisms is for the cheapest possible not good quality. So you simply can't buy good quality.

It was possible in the 1980s, at great expense, for the humble cassette tape to sound pretty good, the Nakamichi Dragon is the most famous high end tape deck.

But you can't do that today. There are a handful of Chinese manufacturers, spitting out variations on the same basic cheapest possible "eh, it's good enough" mechanism and that's the entire market.