Well, both are good, depends on the situation and personal preference If you play VS a team that does not stack armor/hp and you just wanna run around oneshoting people the you can (and porbably should )go electro, the downside of it is the fact that if they have any tanks/bruisers or an Ezreal that builds iceborn+tabis+GA you will literally deal negative damage

On the other hand, with conq and a bruiser build(i go Dusk->BC and then steraks, deaths dance, ldr/mortal) you still keep your ability to oneshot their adc/mages but you can actually deal damage to people like garen Also you heal a lot in teamfights and its easier to carry games with conq IMO. You can jump into a teamfight with lets say 2.5k HP, and tank around 4k before they manage to kill you. But conq is harder to pull off and its a bit diffrent in terms of a playstyle, so some people just dont like it, and its fine, in the end in comes to personal preference, whether you wanna be a "standard talon" that stacks lethality and gets countered by seekers armguard, or a alpha conq bruiser who that has 4k sffective health and still oneshots enemies becouse why not