Episode 23 (B) is pretty much where Okabe gives up after failing to save Kurisu the first time, which causes a split to the timeline and leads into the start of Steins Gate 0
It's almost 9 pm here.
It's pretty sad. If you watch it I would recommend watching the alternate version of episode 23 from the original Steins Gate first.
I see that both F/Z and PMMM are in your top 10 ^_^. In that case I think you might enjoy Psycho Pass as well since it’s written by the same guy (Gen Urobuchi).
So is Code Geass your all-time favourite anime? I personally love the show too but I place FullMetal Alchemist: Brotherhood and Attack On Titan even higher.