Digital BW, The Print

I generally use my Pentax 67. There are advantages and disadvantages.
The main advantage is obvious, the large amount of information in the
negative. The larger you print the more you need that. Also you have
more cropping flexibility with a large neg; that may or may not be an
issue for you. The disadvantage I am increasingly aware of is film
grain. Even a fine grain T-Max type film, I use Delta 400, produces
obvious grain for the scanner to scan (Tri-X is worse). It can be
dealt with in Photoshop with blurring and sharpening but sometimes not
satisfactorily. It is an advantage in this regard to set your scanner
to do multiple passes if it has that option. As between a 35 mm film
camera and a digital 35 (I have a Nikon D200); I would definitely
choose digital plus the usual advice to buy the best lens you can
afford. If the trade off is bells and whistles on the camera vs
lenses, choose better lenses every time. The D200 is a terrific
camera, but overkill in my hands; I use it like a K1000 about 90
percent of the time. Finally, I don't think it matters whether you
scan in RGB or gray scale (there is a debate about this, but I am not
convinced, so I've stopped scanning in RGB; your first step in PS will
be convert to gray scale, and that will cut your file size by 2/3.