Any alt coin suggestion expect ada.In my point of view of ada still can't surpass ETH in the smart contract field and even if they can make it will be hard to be replace existing eth smart contract eco system.Moreover late coming project like sol even surpassing to ada,all things ada have is the loyal user base and nothing special things in tech
To outperform ETH is not an easy thing to do ADA, currently ETH is in the top three of the market, even ETH will continue to be in that position, even if ADA is able to outperform ETH it will only be temporary, but I think at this time ADA can't do it yet that, when compared between the two, both movement, trend and selling price. Let alone talking about the smart contract between the two, this will benefit ETH in general.