I won't pick any of both. I already used them a bit and didn't like them, i found them too cumbersome, but one of the main reasons I am wary of using them is because their business models, SaaS. I think they are a trap and not actually completely free since you are attached to the ToS of those engines and if a sudden change occurs, like a free featured turned paid or an increase in the royalties, etc. You basically have 2 options: Not use them or accept new terms that you may not like.
So, honestly. I prefer other engines. Like Coppercube, GameGuru Max if i find it useful, or IDK, Perhaps O3DE or GODOT. A game engine that if i have to pay, it's a one time license.
So none. And there is not such thing as the best. If you have a 'best one' then the rest wouldn't exists. haha. I just pick up based in what i want and what i want to fight against.
Like, Coppercube for PS1,PS2 looking games. Game Guru Max for good graphics but limited to First person games, O3DE for an Unreal Like workflow and results but with complexities added (and lack of documentation and tutorials).