I suggest you to choose between Waves, MGO, Stellar and TRX. It's still up to you to decide 
I think the best suited coins are still eth and btc. These two are the sole foundation of the market and there are new updates on these both projects early next year such as approval of etf by solidx vaneck and the upcoming hardfork of ethereum. I think there will be rally for the level price once these mentioned event commenced.
ethereum and bitcoin still become the best choice to buy right now,,
but, others altcoins has a chance to growing too my friend, for example waves, EOS, and maybe Cardano
regards