Having owned the 360 version of this game, I can safely say that this version is the superior of the two releases.
I am just coming to the end of the main quest and all I can say is...."wow" The realm of Cyrodyyl is perhaps one of the most sophisticated and beautiful game worlds ever created. I sigh in pleasure as I venture many miles into the wilderness for no apparent reason and stumble accross a lovely little chapel with its own quest.
For me, the beauty of this game comes from its ability to distract you from the main quest, just at the sight of a small cave on the side of the road, or by listening in on strangers conversations.
There are some minor technical issues which are expected to arise in a game such as this that constantly demands all that your console has to offer, however, they rarely hinder the otherwise amazing experience.
The longevity of this game is astounding. After you finish the main quest, there is no way to keep track of how many side quests there are, or even their locations. You just have to go on the biggest adventure of your life and discover them all for yourself!!!