scenarios where the MC lady's conscience is battling with her as to see how far she can go, while thinking of the possible consequences yet the allure to do something kinky or naughty is so strong, dialogs that masterfully represent this make the story that much exciting. Like I said LoTV and Humbling Experience has it in spades. On the Renpy side Jessica O'Niel's Hard News and A Wife and Mother are top contestants (with JOHN winning the bout due to AWAM's turtle like progression).
In the end while render quality is no doubt important, its the story and dialogs that ultimately win for me in the end and that is why Anna EA gets a lower seat in my list.
P.S : Humbling Experience renders are i think at 320p or 480p and despite the low quality, the game is my topmost favorite rpgmaker game (I talk about it a lot, I'm just a sucker for it)