I found Obduction great. I liked Myst 1-3, but this one is even better. Where I got stuck to the point of having to look up the way forward at least once in the Myst games, this game's puzzles all made sense to me. The story was more engaging (to me) than any of the Myst stories and I found myself wondering about and looking around the world and what happened more than about the puzzles quite often - which I like! I play these games to enjoy a story with the puzzles as a means of achieving progress, so this was very nice. The game has a screenshot function which initially makes you think you don't have to take notes. Far from it: the teleports, roations, and relative positions of vairous things really require you take notes. The labyrinth puzzle was mentioned negatively in some reviews; I found it easy enough after drawing the map and cutting out the pieces that can move :-)
The game is touching, the puzzles are mostly logical (there was one near the end of the game were clearly story got more important than logic). It's really a nice game, but if you can play it in German, the voice acting is much better and makes the characters so much more likeable (just like in some other Daedelic games)