I don't really like both tbh, but if I had to choose one, it would be Umineko.
I mean, Higurashi was interesting at first, but then it just got really confusing. This character was supposed to be dead but in the Далее episode they were alive bla bla... I don't know, it just wasn't my cup of tea.
The reason why I picked Umineko was because of Beatrice. Her ccraziness makes the Показать еще enjoyable. I don't really like the plot tho.