What are the best coins to invest in 2021?

Hello everyone. I'm looking to start a discussion about investment in different crypto currencies in 2021.
Let me start with this - I'm using mostly binance and coinbase for this (ref links below).

So far I've invested in Algorand, ADA, SOL and Polka DOT.

What is your opinion on these?

Coinbase offers good staking rewards for some currencies + free coins! Here is my ref link: https://www.coinbase.com/join/atanas_t

Binance has lower fees compared to Coinbase and it offers plenty of investment opportunities:
https://www.binance.com/en/register?ref=LC7RVQQ8