Actually I prefer ebony all-around. My understanding and experience of the different fretboard woods is a little different from what kill_your_scene states.
Solid maple looks killer. Especially with certain body styles/colors (white Strat w/ white pickguard) you can't beat the look. Soundwise maple tends to be bright and snappy. The feel of a maple board is very smooth. The softer maple doesn't seem to hold up as well over time though. Usually when you see pics of old, reliced necks with pits and grooves from playwear it's a maple neck.
Rosewood has a smoother, darker tone. It also has a longer, more textured grain in the wood that you can actually feel when playing. It's not a bad feel, but certainly not as smooth as maple. Rosewood also tends to hold up better over time. Rosewood color can vary from a light reddish-brown to a very dark, almost black color.
Ebony is kind of the best of both worlds. It's a very hard wood with almost no grain. It looks and feels like smooth, polished stone. Because of this it's very durable. It may not be as dark sounding as rosewood but I don't find it as bright as maple either. It's sort of someplace in-between soundwise. And it looks killer. Shiny fretwork and fancy inlays really seem to jump off the board as the dark black contrasts nicely with them. Match that with black pickups/controls and you have a very classy-looking axe.