Fireworks is just a small little editor for editing small stuff for me. If I'm doing something just as text or so, something that isn't required for 100% high quality. I will open up fireworks so it doesn't slow down my laptop. I haven't found, nor do I think its created, that brushes and effects for fireworks, its just whatever comes with it.

Photoshop is 100% better for higher quality, more effects work. Downloading brushes, creating patterns, using patterns, downloading effects etc, all around its better I think.