It will depends on our investment demanding because there are some project follow erc20 network. But if you want ask me for low transactions fees network then you should taken bsc network.
Binance chain no doubt has a cheaper fee than the Ethereum chain (ERC20).
However at this real time where people choice bsc network for reduce gas fees and upcoming many project follow them.
If you are for the variety of projects, both seem to be equal for now or it is ERC20 that has more than the BSC. Either will do if you're just there to trade and gain some short-term profits. Sounds easy but it's actually not.
After the price of Ethereum went above $1000 that's where the disaster for users came,
That's normal whenever a price pump comes, expect that even those unpopular chains will also get an increase in fee if they don't scale up and when their demand increases.