Originally Posted by Pravit
You should choose the language you like the most, but I wouldn't recommend trying to learn more than one language at a time, unless you already have a solid foundation of one language and have ended the "active" learning process for it. By this I mean that you've finished reading grammar and working in textbooks and you learn the language through contact with native speakers, reading, etc. At this stage you could probably start picking up another language. But to try to learn the basics of both languages at the same time is rather difficult.