This is an interesting question. I'm afraid no one can tell you which Batman is your Batman. That's your own decision. For me, my Batman was from somewhere in the 60's when Julius Schwatrz took over as editor and after Bob Kane had been retired up until the Crisis of Infinite Earths. Before that, Batman was sort of goofy as the 50's and the comics code was not nice to most superheroes. After Crisis, the emphatic badass batman took root. Not that some good stories didn't come out post Crisis, but Frank Miller's take because the goal everyone shot for and I don't like that Batman. I detested Year One. Dark Knight Returns was alright as an alternate version of the character, but terrible as the cannon version of the character. Besides, DKR has not aged well.
So, my preferred batman occurred in a very narrow band, mostly in the 70's/early 80's which was also my childhood. So it's no surprise this is my Batman. For your batman, i suggest looking towards your own childhood.