I've tried VTAC, Magpul and MS4. I like all of them, but the SOB is my favorite. The MS4 is hard to cinch down tight and keep that way, but I like the width and stiffness, and the ability to have a 1 point sling for the 1% of time that I think a 1 point sling is a good idea is also a nice, if unneeded feature. The VTAC is a great sling for all the reasons that the SOB sling is a great sling, only the SOB is better, because the buckle stays in the same place all the time, and is faster to get to. I have been trying Pat McNamara's Sling Ding for a while, too, and like it. Very handy for improvised support positions.