haven't seen Beyond the Wall of Sleep, but heard from a couple sources that it was terrible in almost every regard.
Necronomicon wasn't bad, but it wasn't great either. Jeffery Combs is always excellent, but he was in the movie for only a few minutes between the 3 stories. overall, Necronomicon is worth watching once or twice, but it's definitely not my favorite Mythos movie... by far!
VS
greetings , beyond the wall of sleep, is quite good,
my favorite of lurker films, is call of cthulhu, the imagery
is very unsettling and satanic, i would rate all lurker films
as a must see