"Overall, is it a lot better than the 2000 PRO edition, and is it worth the money ?"
Not if you have to buy a new computer to run it. The only reason why I bought FS2002 was because I heard that the scenery was much better and, importantly, smoother (I wasn't getting very good framerates in FS2000, so I was hoping for a slight improvement in this regard). However, it refused to run at all on my laptop (I only have a 4Mb Video chip).
Rgds.
Q