I just remember that I never found a good reason for buying it, so I frankly doubt that it's worth the money. Not that I can say that I found much use for my 3.1->3.5 upgrade either...
I'm not waiting for OS4.0 anymore, but when/if it shows up I'll might give it a try though...
Where was I? Yeah, right... Uhm, not worth buying (3.9) is my humble opinion :-)