Reading Ef, I'm, basing on the youtube playthrough playlist, around 17parts from 32, from First Tale.
And while I really dislike both heroines, annoying, clingy, violent lifedestroyers, I like this tittle. Romance is really subtly written. Well, it's actually "written" and not like in most of the VNs "protag suddenly realizes he's in love". Of course, abrupt h scenes and unfunny humour dimnish the overall enjoyement, but it's still a nice read.