I with the Japanese for this one as I'm too have not good impression with Umineko especially for CH 8 while Higurashi maybe one of the best VN of all time.
What make Higurashi better than Umineko because the writer bother to write explicit conclusion rather than "ha, I am more clever than my reader so try to guess what the ending is" B horror movie style IMO.
Thanks for compiling this, really helping. I hope there are some localization company who have an adequate resources (money, labor and time) dare to translated the remaining one. It's so sad that only Moege and to the some extent Chuuni genre receive more localization company attention these day.