In 2021 Ethereum for sure is the best coin for buy, I choose Ethereum because it is the 2nd best altcoin in the crypto world, ETH very much potential, price is comparatively low, daily increasing ability, well novel ideas for a better future, market analysis says ETH would be king of all Altcoins. That is why you can buy Ethereum.
What you think about the transaction fees problems of the Ethereum though? I don't think it is ever going to be solved and some projects have already started shifting to other blockchains. Although I am not saying ETH is the worst choice but better ones are out there.
It depends on your investment, if you have lots of money for trade then obviously you should buy ETH. Because ETH leading the second position for almost 2 years. But you need to analyze more to find out for yourself.
If you are going by market cap, even XRP seems like a very good choice but anyone who is in the market and follows news about SEC and the lawsuit against them, knows how risky it is. I would never invest just solely based on the market cap.
I would pick ethereum. The explanation is very simple, that is on the grounds that up to this point, Ethereum hasn't been siphoned, and I'm certain the cost will be siphoned. no doubt, ethereum's potential value this year could hit $ 1000, or even hit its new ATH. I think many individuals are looking at this as well.
Are you serious about it? I mean ETH is already beyond 1k my man and I think you wanted to say 10k or you are just not even checking market at all.