The best halo since Halo CE (combat evolved)
The Good: There is a lot of cool new features in halo reach such as the ability to sprint (this ability can be traded for a jetpack, and lots of other cool things you could do), the graphics are very good, the weapons are cool, the campaign is a decent length (about 8-10 hours), the campaign is fun whether you play solo or with a friend, the maps are really nice looking and the versing is loads of fun.
The Bad: not much really, no 4 player on campaign or online
Overall: halo reach is an outstanding game 9/10