Personally I believe one of the best date ideas with Toko would be at Toyo Bunko before walking through the Shiba Ryotaro Museum. Just imagine it. Her cute little stutters talking about random books and history. That alone would send my heart into overdrive, but she might get extremely into it. Some sort of poem book would make her go "GAAAAHHH" in glee where she would salivate over the pages. She is the Ultimate writing prodigy after all, she may even begin to start writing in a small notebook as she takes inspiration. And how much I would read every word and ingrain it into my soul. The other ideas with her that would work would be reacting romance novels with her, possibly with light roleplay to make her little heart burst out of her chest.

Genocider would be a different story. Ultimately she has a submissive side, but is much more playfully aggressive. I personally feel she has many of the same aspects of Toko but to a different degree. Clearly most of the benefits would be sexual with a woman as crazy as genocider, since she could snap at any moment or make some sort of weird demand as a joke. Either way it would be worth it.

That concludes to why Toko is best girl in 1.