My son wanted to make a friend of his a mix tape, so I just recently went through the process of trying to get him a tape deck he could record to. Older decks on ebay are dicey, I got one labeled as "tested and working", but it arrived and was definitely not. "LOL, I just copied and pasted another listing, didn't read it". I got this weird deck that looks like the old portable decks from the '80s, but it can record to and from a USB, and once he figured out the right levels and compression settings (audio, not digital), he was able to make a reasonable sounding cassette. We had a lot of discussions about S/N ratios and bandwidth that I never expected to have with him.
I have five tape decks and two of them work. Most of them were fairly cheap (<$40) but I tried buying one really elite Sony deck with Dolby S that I got one good recording out before one of the heads wound up rotated 90 degrees away from where it should be.
I think the story is that the quality of a tape deck is inversely proportional to its need for maintenance. Any deck made in the last 20 years has the same mechanism
https://www.theamericanconservative.com/the-last-cassette-pl...
which is mediocre sounding but reliable. TEAC makes a dual deck model that costs about $600 (crazy!) but probably sounds about as good as $50 deck from back in the day, they say is the most dependable deck they ever made.
Between having two A/V systems and a tapehead in the family I am still looking for another one. I'd like an elite deck but probably won't get one. My son brought home a reel-to-reel that didn't work and he's still hoping he can get one that does.