Der Golem is definately worth it.
I'd also like to make a recommendation:
http://www.amazon.com/Fright-Fest-Ni...?ie=UTF8&s=dvd
It's a set called Fright Fest, and it contains 10 classic horror films, including a few silents. Unfortunately, neither of the ones you mentioned above are in it, but it's up that alley. It comes in a great tin package, with a folded case inside containing 5 DVDs, 2 movies per DVD.
I highly reccomend it, I bought the set myself and love it.
And you can get it much cheaper at DeepDiscountDVD.com ($18), but I posted the Amazon link because it gives a better description...and because I wrote a review under it. :)