Provia 400 slide film is discontinued so stock up while you can if you want to use it. (For comments on the discontinuation of this film, please go to the appropriated ongoing threads, not here).
Regular colour negative film has more latitude to under- and overexposure. I like Fuji 400 NPH film, now renamed into 400H. See http://www.fujifilm.com/products/pro...specifications
When in fear of running into bears, use a Leica camera. It has a very quiet shutter and is much lighter to run with....