Dexchelon is a web app that finds the lowest price for trading USDC and wECH by using an aggregated route. Dexchelon is provided by ECH.Guru that has other offerings as well, check out their site!
The interface is extremely simple and easy to use. You connect your wallet, input the amount you want to exchange and the algorithm finds an optimized route. You can also set slippage and timeout parameters.