That's really a thing you could only decide yourself. Do you prefer color or B&W?
When I haven't had access to a darkroom, I've shot color slides exclusively. Color slides require that you get everything right in the camera--composition, exposure, etc.--because you are creating the final product right there, and slide film doesn't give you much exposure latitude. Even if you decide to print the slide later, the slide is the original image that one usually tries to match at the printing stage (unless you are consciously trying to manipulate the image for effect).
B&W will give you much more control, on the other hand, if you do your own darkroom work, since you have many options for interpreting the negative after the fact.
They are different disciplines, and both are worth learning. Currently, I lean more toward B&W.