If you are just getting up and thinking about getting the LE Halo X-Box I would take a quick trip to Target. I picked one up this morning, and what made it even better was you got a free platinum hits game with purchase of any system.
All the regular stores (Walmart, Target, BB, CC, etc.) were advertising them in the Sunday paper, so I felt confident I could still score one. I figured that traffic at Target (especially at 9AM) would be the lightest ensuring my success. So not only did I manage to get the system without pre-ordering it, I got an extra game (grabbed 007 - nightfire).
Now I'm playing through a stack of demos I've aquired over the last few months trying to see what I want to get for my first purchase.
So far I know I need HotD 3.