You shouldn't buy a coin because of how many sats it is because on its own, it's a completely arbitrary number. It's like buying a coin based on its supply. What you should be looking at is the coin's market capitalization, which takes both price and supply into account. There's a reason why coinmarketcap.com orders coins based on their market cap by default. You'll miss out on a ton of great coins if all you look at is how many sats they are.