About TNBA for me. I'd go earlier, as in around B:TAS Bats, but I'm just going by the ones you listed. So I'll go TNBA.
God-like Batman, ala JL/JLU is so not where it's at for me. "Destroyer" has to be the worst example(for the reasons I'm sure everyone else has). I actually like where he's at in BATB. Not just because I enjoy the show, but because that's about the power level I like him to be.