These two Dan Curtis productions are well worth watching, particularly Dracula which features a great performance by the underrated Jack Palance as the Count. However....
The reason I have given this such a low rating is because of the appalling quality of the transfers. Dracula starts out so dark that you can't see anything. My VHS copy (not from MPI but a UK tape) clearly shows a lake, Castle Dracula, and a pack of dogs running to the castle. Here, we hear the dogs but the screen is almost pitch black. Things don't get any better later on as brighter colours bleed (no pun intended) into each other, particularly reds. There's barely a moment in the film where I wasn't distracted by the lousy transfer.
Jekyll and Hyde's problems lie with the source material and is marginally more watchable. It was filmed on videotape and looks like a second or third generation copy. This is more forgiveable considering that the original print may have been in poor condition, but no restoration work has been performed which is a shame.
Hopefully Dracula will get another DVD release sourced from the same print used for my VHS copy. It's not perfect, but at least it's more watchable than MPIs terrible DVD version. I have no idea what the later single MPI DVD release of Dracula is like, but I'm assuming it's of exactly the same appalling quality as this one.