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
I do not agree on this one. Tron is the oldest and the most reliable one among them for sure.
However, we don't know which one worth investing and which one isn't.
Whole point of risky investments is to risk your funds and pray for big reward.
Tron has less chances to gain momentum compared to some relatively unknown tokens/coins