I must say I'm on the extreme end where I really love Poirot and absolutely hate Holmes. I've read some Holmes stories where the solution was basically gotten by Holmes tying the criminal up and interrogating him, which imo is such a cheap way of solving a mystery.

On the other hand, I grew up with Poirot and love every eccentricity of his, and especially the part where he's very tactful and kind (though shrewd) to everyone so they confide in him, as opposed to Holmes being the tactless and kinda rude person.