Of course, it needs to be noted that almost all of these are available in restored editions thatare much better than this one, but on the whole, this set isn't too bad -- although none of these is in really good condition, and aside from the (about 9" x 14") poster reproductions, there are no extras.
Here's the breakdown (IMHO, YMMV, you are the best judge of what you can tolerate):
Birth of a Nation -- 103 min., no tint, print is blurry and washed out
Intolerance -- 167 min,, tinted, scratching, some blurring, some popping and distortion in soundtrack
Orphans of the Storm -- 150 min., no tinting, good print
Cabinet of Dr. Caligari -- 70 min., no tinting, washed out, visible
Nosferatu -- 80 min., no tinting, dark, poor quality (this is probably the worst of the group)
Metropolis -- 89 min., tinted and toned, poor condition
Hunchback of Notre Dame -- 96 min., tinted, badly scratched print, poor definition -- but it's watchable
Phantom of the Opera -- 79 min., ball scene tinted, some parts dark and lack definition, but frequently good definition
Dr. Jekyll and Mr. Hyde -- 82 min., dark, some loss of definition, some scratching, nothing really bad
The Beloved Rogue -- 98 min., no tinting, some loss of detail, some scratching, not too bad
Battleship Potemkin -- 73 min., no tinting, washed out in spots, not too scratched (the cover has the wrong runtime, there is an additional 46 min. documentary on Eisenstein).
The General -- 107 min. no tinting, blurry, scratched, mostly not too bad.
With all that said, Nosferatu is the only one that's really poor quality (for an unrestored film of the silent era). If you've seen the restoration of Caligari, you probably won't be able to tolerate this one, and this is even more true of Metropolis -- this cut is related to the drastically cut version that was shown in the US (the tinting and toning of some of the scenes is interesting). This is probably the shortest cut I've seen of Birth of a Nation.
All the others I found adequate, but if you really love one of these movies, this version probably won't satisfy you.