The best Altcoin in the year 2019 would be TRON and Dogecoin. These are the sleeping giant in the cryptocurrency market with the fastest payment features. Tron has already given above 3000% return to its initial investors.
I think, it is very difficult to be able to predict whether the market shows green or stays in red at the beginning of 2019. At present, the market is being hit by a crisis which is very different from the market late last year. although good or bad news will not significantly affect the market. what you can do is speculate your assets on coins that will give maximum profit in 2019