I don’t think that we should be too too worried about the sounds on the Fusion or any other new synth today (sounds are so subjective) because all synths are coming to a point where the sounds are comparable to each other and are a starting point for users to change it to their liking.

For me, the Fusion’s selling point is the amount of samples it can play back at one time. It would be nice if it could have sample play back streaming directly from the hard drive using different sample formats.
The only things with sounds would be the drum, percussion and sound effect sounds. Those better be great!! But for that price and having the four sound engines, you can not go wrong.

Still trying it out would be the best thing to do. The OS must be easy to use and they must not have a lot of bugs in the software. I like the fact that you can move files between keyboard and computer. That is good for moving sound samples and other work product files. I wouldn’t mine getting one for myself.