Best way for making WordPress in 3 languages

Hello!

I would like to know your opinion about translating WP. What would be the best way to do that? I am thinking about using 3 separate WP MU installations to achieve 3 similar web sites in different languages, but maybe you can suggest a different way to do it.

I know that there are some plugins available, I have tried them some time ago, then they all were so full of errors that I decided not to use them ever again. I know that there are also automatic translation plugins available, but this time it is not a solution.