The consumer grade Fuji Superia 100 is still available in 35mm in Japan. I must admit I have shot only one roll of it, more out of curiosity, but haven't really analyzed or compared the results. According to the data sheet it is resolving slightly better than Superia 200. Fuji's consumer offerings in C41 are top (if you like the Fuji colors), but it seems they have more or less given up the professional print film market nowadays. So if you look for a slow pro C41 film, you are stuck with Portra 160 or Ektar 100, both excellent films. If you would tell us what kind of application you intend to use the film for, somebody might be able to give you certain tips regarding choice of film, exposure etc.