@Scrufftie / @verybiglebowski - totally agree, I can’t see why the Contax NX is being recommended either when their are much more obvious choices (I would have thought Canon AE1 or Pentax K1000 would be recommended given the amount of pages devoted to them )
Well it is hard to judge Ai today

I believe that NX is a great camera by its specificarion and quality. Feature wise it kills K1000 and Canon AE1 hands down, but it is hard to establish the criteria for the best film camera today imho.
If you consider reliability, Contax NX was introduced around 2001-2002 which makes it one of the “youngest” old stock, and Canon AE1 has more probability of electronic failure given its age.
I can hardly understand the hype around K1000, since KX or even KM are better featured cameras of the same age and often cheaper (I sold my K1000 for 200 EUR few weeks ago).
You can find NX for less than 200 EUR today.
I am also selling my Nikon Fm3a, but I am asking for the premium price, since I am not in a rush, but it is all about fear of upcoming possible failures.
Since there are not new film cameras that will fulfill my requirements, I am fond of keeping the cheaper ones till they work.
FWIW my top five 35mm cameras are recently Leica R6.2, Canon T90, Contax 159, Olympus OM 3 Ti and Leicaflex SL2. Three of them are mechanical and thus more probable to be repaired if needed, but Canon T90 and Contax 159 are gems till they work.
I am not a big fan of rangefinder, but I still have a few. My top five (that I have experience with) are: Zeiss Ikon ZM (sold it a few months ago), Canon 7sZ, Leica M6 TTL (sold it two years ago, stupid me), Leica CL and Leica IIIf.
My top five medium format cameras are Hasselblad 500c/m, Rolleiflex 2.8F (sold it, stupid me), Yashica MAT 124G, Minolta Autocord, and Contax G1 (I’d like to have Mamiya 7, Norita 66, Exacta 66 and many others, but never had an opportunity to try them).
Of course, Contax N645 would be great too, but same as with Contax NX, it would mean significant investment in lenses.
My LF cameras that I am still struggling to use more, are Linhof Technica (I have model IV with bellows that need repair) and Cambo (I have three of them, but had used only Master for just a few photos).
In a conclusion, Ai might had considered Contax NX as a top recommendation in 2024 due to its features and relative youth, despite its niche appearance and expensive lenses.
Since we are all looking for the camera that will be reliable and have features that we need, you might try to add more specifics in order to get results closer to your expectations.