I voted for "A story needs a good balance between A- and B-plots."
Now that isn't to say that I don't love the short smoochy stories, but on the whole I think I like to see some plot with it in longer stories. Tho as I'm sitting here writing this, I'm realising that some of my favourite long stories have just been B-plot. I think my answer is that I'll read just about anything!
Loriel