Cinnamon grease: Very sticky stuff. If you play in cooler climates, you need to add some oil. After adding a lot of paintball gun oil, this stuff works great. I only need to lube my matrix once every 3 to 4 cases.
Matrix muck: The best there is (IMO). You don't need to do anything to it to get it working great.
3 in 1 oil: Avoid if possible. I was using it for a while and it ate through one of my bolt stem's o-rings.
Dow 33: If you add some oil, this stuff works great! I have heard some stickiness problems if you don't add any oil to it.