There are a few (precious few) gems in this collection - J. Sheridan Le Fanu's "Camilla" for one, Stoker's "Dracula's Guest" for another - but beyond those this collection is a tiresome read. Yes, there are stories by the recognized greats, and yes, there are stories by unrecognized authors who should be remembered.
But as a whole? Not worth it unless you're a horror historian doing research in the evolution of the genre. Each of the stories were from their time, written in a style modern readers might find tiring if not numbingly pedantic. Good in their time, yes, and now not so much so.