Switchblade Romance is really good (dunno why they didnt release it over here with its far better original title, High Tension), though yeah the ending is pretty frustrating, still not sure about it myself, i'll have to revisit it one day soon to make my mind up.
As for Maniac, Mr.Loops I'm surprised! But hey, different strokes for different folks
Its a film I somehow manage to watch at least once a year, usually around easter time for some strange reason!