My WoW installation took 5 hours.
I was considering AoC as well but everyone said it sucked. I was alsto considering LotR online but I don't know anyone who plays it.
Jerkface
AoC was fantastic for the first 20 levels, which was about a 15-20 hour experience. But it dropped off considerably after that. I still consider those first 20 levels worth the price of admission, as they captured the universe wonderfully and the story is as good as most single player RPG's.
There are three guys here who play LotR Online, me, Setzer, and one of the developers.