Keep these points in mind about DEX aggregators:
1) Aggregators generally don’t provide liquidity themselves; they just route trades through pools on various DEXs.
2) Aggregators may also split a trade into multiple steps using an intermediate token—for example, swapping A for ETH first, then ETH for B.
3) When comparing quotes, look at the amount you actually receive after fees and gas, not just the exchange rate.
When swapping through an aggregator on Ethereum, pay $ETH in gas; $1INCH is 1inch’s governance token.

This is just my personal opinion, not a basis for trading decisions.