I've been suing photoshop since ver 4.x so I'm kind of set in my ways and I'm not really looking forward to making the switch if it does turn out to be better. As it is pretty much the air that I breath I really havent spent enough time in fireworks so give you an educated opinion, but i did do a search and found this article to be interesting.
I hope this helps.
http://www.wilshireone.com/article/4...s-vs-photoshop