I don't know, I played through Myst and Riven, and Myst's puzzles weren't too bad. Riven got annoying though, because to get from one area of the game to the other it took you forever, and also because half the areas were hidden in some way, and to find them you had to either be lucky, or...yeah, pretty much be lucky. Its solutions weren't as logical as Myst's though.
Tried to play through the third one (Exile), but I got a serious driver defect a little ways through and had to backup my computer. It didn't quite make the cut on things I wanted to backup, it was too much of the things I didn't like about Riven and not enough of what I did.