Mars for science & colonies...
Actually Mars is the higher priority for many in the space science community as well.
See
An Integrated Strategy for Planetary Sciences 1995-2010
National Research Council
http://www.nap.edu/readingroom/books/planet_sci/
summary
http://www.nap.edu/readingroom/books/planet_sci/contents/summary.html
entire report
http://www.nap.edu/readingroom/books/planet_sci/contents/index.html
