Moon is absolutely amazing. Duncan Jones, the writer/director, is David Bowie's son. The Blu-Ray looks and sounds fantastic.
The Blu-Ray of CE3K looks amazing, as well, and includes all 3 versions to boot (take that, GL!).
I haven't seen Apes on BR, so I don't know how that one looks.
Sounds like you got a nice sci-fi collection there! Three of my favorites in high def all in one go...
Speaking of David Bowie, check out my avatar. Moon reminded me of some of the classic sci-fi films, I think part of it has to do with using the practical special effects.
Barnes and Noble had a buy two get one free thing going on, so I got POTA free. It's a bonus the cover doesn't give away the ending like the old DVD I had did.