This question has been posed many times before - I would suggest that if you're seriously into scenarios, or really interested in checking out either the multi-map feature or the animated graphics and the price is within your budget, then by all means. If you're not that much into scenarios and the other bits and pieces appear like window dressing at best, then maybe it's not for you.
See;
apolyton.net/forums/Forum29/HTML/000710.html and
apolyton.net/forums/Forum29/HTML/000698.html as a couple of recent discussion threads on this matter - although if you dig deep enough I'm sure you could pull up about ten.