Personally, I definitely choose to buy and invest in Ethereum for now, then the reason is very simple, because Ethereum is ranked 2 on coinmarketcap and the price of Ethereum has not yet touched its ATH price, even though Bitcoin has already set a new record for its ATH price, so it makes me believe that soon the price of Ethereum will definitely increase at least in its ATH price (my target for the price of Ethereum at $1500-$1800).
Ethereum has been showing good potential and volume for years so I firmly believe that its best to invest in it. It has passed lots of tests of time and I'm sure that it will still prove a lot in the future. Aside from ETH, coins like BNB, ADA and DOT are also worth buying these days. Just make sure that you'll know how to invest at perfect timing.