Translate English Documents Accurately

I have a set of written documents in English that I need rendered flawlessly into another language. The exact target language has not been locked in yet—I’m deciding between Spanish, French, or German—so let me know which of those three you handle best and why you’re confident working with it... (Budget: $250 - $750 USD, Jobs: Editing, English (US) Translator, French Translator, German Translator, Language Tutoring, Spanish Translator, Technical Writing, Translation)