I really like christmas music, on both flute and piano. Probably because on piano it's A) easy melodies, and on flout it's a really pleasant sound (when I play it right)Lol. That's cool. I love love love the piano, you've probably seen that many times alreadyDo you have a favorite song to play??
I think it would depend how much you want to play, maybe just start with renting one, until your sure you want one/have saved up enough money?? I don't know much anything else about guitars though, sorry.