Yes I think the best investment is bitcoin, moreover many predict if bitcoin will become trend in year 2018 even though bitoin price at this time still not stable but still many investor hunting.
Bitcoin is the best investment for me, yes it is many predictions that bitcoin will become trend in year 2018 even have risk cause we know that value is unstable at this time but lot's of investors are positive thinker that bitcoin give me opportunity to earn more profit.