Originally posted by: RedWolf
Full Disclosure: I own an H9 and I'm selling it
here. I will be buying an Olympus E-510 dSLR.
I think it comes down to if the features of the H9 are important. The H9 has some unique features that the FZ18 and S8000 do not. The H9 has a night shot mode for taking pictures in total darkness and has a 3" tiltable lcd. I have found the tiltable screen to be very useful for taking pictures over your head or low to the ground. I have two kids and it's nice to be able to get pictures of them at their level without spending the time to get down on the ground. It has also been helpful in taking pictures in a crowd (such as at football games, or races). It is good for 'stealth' pictures, too. The night shot is neat and can be useful for getting nocturnal animals but I don't use it much. The H9 performs a little faster than the FZ18.
The FZ18 has a longer zoom and the IQ is better than the H9. I have very little experience with the Fuji. It hasn't been reviewed by many sites but from what I've read, the Fuji is pretty good (though the FZ seems to be a little better). It is pretty close overall to the FZ18. If you are used to Fuji cameras or have XD cards, that might give it a bump up.
All of the recent super zoom cameras have difficulty with low light shots. If low light is important, I would look at a dSLR or the Fuji S6000/S9100.