Tron is the only cheap altcoin that's worth invest money on right now, gradually this blockchain network will expand in near future, that's certain, for the fact that it's still very cheap you can buy with very little money and hold for many years
It's too hard to see TRON price go up as strongly as in 2017, although they are heavily updated and run by Justin Sun. But I think it's not a very good investment for everyone, personally I lost too much when investing in this project in 2018.