Ya;know, I often say ODST is my favorite ('cause it is) but I'm also glad that the rest of the games aren't really all that much like it. Halo is - and, for the most part, should be - a grand sweeping sci-fi epic like the core games. It's really great to have something a bit different from time to time (like ODST and Reach, and I hope to see more games in that vein in the future) but Halo in its truest form usually comes when you are off on a big galactic adventure channeled through ancient alien technologies and gorgeous space vistas.