I've used and continue to use both approaches- I enjoy the buzz of photographing a new place and I've produced some images that really please me this way, but on balance I feel that my best work has been done when I've had the chance to revisit a location in different light/weather conditions and at different times of the year. So often I've been to a new place and snapped away like crazy, but a few months or years down the line many of the resulting pictures look ordinary once the initial excitement has died away. With repeat visits,the work often has more depth rather than just you going for the obvious stuff.