What is the best grainy color film (35mm and C-41)?

I want a little grain (especially for portraits shot in the daylight or afternoon (so a good amount of light)) Also, on another note, what type of color negative film (35mm and C-41) do you guys recommend for indoor (low-light situations) or night photography without a flash. Do you think I can get any type of... show more I want a little grain (especially for portraits shot in the daylight or afternoon (so a good amount of light))

Also, on another note, what type of color negative film (35mm and C-41) do you guys recommend for indoor (low-light situations) or night photography without a flash. Do you think I can get any type of film and then push it to a higher ISO when developing or? Sorry, new at this.
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