Would you rather donate your organs to those who need them or donate your entire body to science?
Donate my organs. I won't need them after I'm gone! Plus, they would help a lot of people more than donating my body to science.
So long as I'm totally dead (not just brain dead) I'll happily donate my organs or entire body to anyone who can make use of them. I don't really have a preference either way and somehow I doubt I'll care once I'm gone.