What is yours? Not just any ol' cup of tea, within a zone of general acceptableness, but the best you can think of. It doesn't have to be perfect, or what could be considered ideal, but it is -- without a doubt -- very much desired. Perhaps you've already read such a story? Or does it/do they only exist in your head at the moment?
What do you look for? Is there a particular series required? A certain pairing of characters, perhaps? Maybe it's the setting, theme, genre(s), or something even more specific? Is it just a few things, or a lot of things, that need to come together to create the reading experience you're looking for?
I was wondering 'cause I'm not sure what mine is, exactly. I'm rather picky, and never seem to feel all that satisfied for one reason or another, and this has only gotten worse over time. I don't even know if any of the stories I've written, am writing or will write, will fit the hardly-known requirements. I wonder if I'll ever read or write a story that will fill me with contentment, and be glad that both it and I existed at a time where our paths could meet.
Wait, that kinda makes it sound like we'd be star-crossed lovers or something. Kyaaaa! XD