The major contenders out there right now seem to be ErWin, Visio, Embarcadero, and Power Designer. However, they all fall under the same general category. ie Not Free. If you are simply looking for an eval copy, you can get that from any of the companies, including ErWin. I'm not sure why you excluded ErWin, but if it was because it's not free and you don't like eval copies, then none of these will work for you. Mind you, if your company does anything with databases, then it *really* needs to purchase one of the above tools. A database without a maintainable copy of the data model is simply asking for trouble.

Good Luck,

- Chris