I'll vote for bitcoin because i'm very interested in it and also technology behind it as the technology blockchain. I find that Bitcoin is first born of all digital currency and hoping its price will grow up this year. i'd would like to be a good trader one day in cryptocurrency. Nowaday I have some a little bit bitcoin in my exchange, but i'm not a full trader yet, just first learning and gaining expirience from collecting bitcoin and some other token daily from many websites of claiming bitcoin for free.