It might not be quite as contrasty as T-Max. The main problem with this is the developing process that it requires. This process is only done by Kodak and a few other labs around the country so getting Kodachrome developed necessarily means sending your film out through a number of hands. I have lost film this way and I like to go someplace where my film will be handled in house which lowers the chance of its being lost about a thousand percent. This is my real recommendation for slide film.
Grain is very good and color saturation is terrific.
How they work and what types are available.