French/German/Czech/Greek

OK, here's everyone's chance to vote on which language(s) I should take this spring. Maximum of 2.

French: the easiest, but also the most similar to English and Spanish
German: different and I know a good school, but I already spent a couple months on it
Czech: different and I could live way cheap in Prague, but obviously harder and useful only in one place
Greek: I have a head start on it from when I was 16, and Greece is warm, but fairly difficult and again only useful in one place (unless you count Greek root words.)

(This is what my professor at Illinois next year said, if it informs your decision at all. But I would probably use Spanish in my research, which I already know pretty well:
"With respect to the language requirement, it is really up to you. Any of the languages that you have mentioned should be fine. I would, however, go for a language that could potentially fit in within your research plans. Remember that we also have other non-western languages that are taught on campus and some of them come with financial aid. I am talking here about the FLAS fellowships, a federally funded fellowship program that support graduate students’ study of a foreign language (say Hindi, Arabic, Turkish, Quechua etc). Our students in Linguistics have usually done well in the FLAS competition and some of them have gone on to incorporate the languages they have studied in their research")