I personally don't, but I have a group of friends IRL who play it non-stop, which is where I get most of my info from.
It's basically a 'Pay $100 (on release) for half of the story, then pay another $20 for the next section, another $20 for the section after that, and then finally another $70 for the last expansion' story.
Reach was pretty good. Even though the ending was spoiled way before the game came out. But yeah it was one of my favorites.
True. The fact that it was Bungie's last Halo game helped it's reception as well (at least in my opinion it did), even if the ending was ruined.