I really think all the types of Ektapress film (I haven't
tried PJ800 yet.) are really good for photojournalism. I am always
impressed with their ability to provide good photographs. Also I feel very
confident that anything I take (assuming correct
exposure and focus) will register in a print even if I can
barely see it. Several times I've photographed faint
rainbows and always they're easy to see.
Both films feature moderate color saturation, but
this can sometimes be a real bonus--you'll almost never
end up with garish looking pictures even with poor lighting and no
corrective filtration. PJ100 has nice fine grain (the best
sharpness but not as exceptional for its speed as PJ400), and it costs $65.95 plus $9.00 shipping at Adorama.