Though voted for B&W by error my preference is for Colour.
Isnt it this colour which makes our world a beautiful place. Only thing which seprates Earth from other planets is its rich flora & funa - which is nothing but colour.
Though B&W photos are good in their own right - it can never match the sense of wonder, beauty or joy at seeing a colourful photograph showing life right after a heavy rainfall. or a rose with dew drops on it or the different colours of a mountain stram
Cheers