Not that anyone cares about my personal opinions on Macromedia/Adobe Flash, but, I am not happy with Flash 8 on my Mac. I’ve used Flash since version 2 and have never had too much of a problem with it. Right now, I’m really disappointed in its performance on a G4 15” laptop (1.2 GHz, 512MB). It’s very unresponsive to shortcut keys and everything seems to lag. I went back to MX2004 and was surprised at how springy it seems in comparison.
Of course, nothing will seem as fast as Flash 5 on OS 9…but hey, I can hope.