As, all we know that Binance smart chain projects are more trending these days. I am interested to invest in these BSC , which one is best for 2021?
You must answer a question that why people like Binance Smart Chain and projects one the chain?
If the answer is simply because of cheaper transaction fees than in ERC_20 chain, it is no convincible. Fees will be high, expensive then cheap. In crypto, many altcoins have very very cheap transaction fees because price of coins are very very cheap. This basic cheap specification does not help them to have too much transactions per second Tx per second. Price is low as well.
You must differentiate between good projects and bad projects. Chains, BSC, cheap transaction fees don't make good projects.
Cheaper transaction fees does not determine a good project but it is appears to be one of the reason to choose a project base on the network, you can't ignore the fact that many people are deeply concerned about the high transaction fee on the eth network, bsc provide a solution to this with their cheap network fees, however, it is still important to do some digging about the project of interest to know more about it, this are two different things, investing on a good project is entirely up to the investor it has nothing to do with transaction fees.