Short list of my top 3 coins that will see the biggest gains by 2020:
1. Matrix AI Network
2. NEO
3. EOS
Good coins chosen though. Yes EOS and NEO have good growth trend. I would add up few more ICO tokens which was listed on exchanges recently. These tokens projects are promising and yes by 2020 these coins would certainly have a huge growth. Betrium, PolicyPal, Surety, MB8Coin and Buzzshow. Each ICO has its own unique projects. Lets wait and watch their growth.