Even FF8 is a bit better at everything.
FF9 will bring Azure, which will meant quite nice buff in 2D drawing speed (you know 2nd fish like MS test? now it will work normally under FF), some more stuff on addon compatibility, some more memory handling improvements.
FF10 even more work on 2D drawing, and even more on memory handling.
And you only need to wait 6 weeks if you feel unsatisfied by FF8.
And those who feel satisfied did not had to wait 12 weeks or more but only month and a half.