The first thing that collectors will notice from the Mattel Halo line be the lack of detailed paint application and washes present in the McFarlane series, despite this I think they're overall better quality and are easier to appreciate at the slightly larger scale. The removable armor is a cool gimmick that hasn't managed to frustrate me so far and I think adds more to the overall bulk of the figure, whereas the Mcfarlane figures look a little bit skinny in comparison. The articulation is good and Master Chief can hold his assault rifle in both hands, my only problem with it is the included extra hand had a hard time holding the energy sword. Also they do scale much better with other 6" lines, like Star Wars and Marvel.