Well I must say these straps are pretty darn comfy. With the gel pads and all the elastic straps ( I'd say double the Quads elasticity) As of my second round of golf. I would give these a A+ in comfort. It truly felt like there was alot less weight that I was carrying around with these straps. Quality appears on par with the Quads. If anything. There is fewer plastic clips on these straps. Also, since the clips that connect to the bag rotate/swivel. I would think there is less rotational tourque to the clips.
I will see how these hold up compared to the Quads, but if they last as long. Like I think they will. They are WAAAAYYY more comfortable than any other 'backpack" style straps out there. I am amazed at how much lighter my bag felt with these. I would reccomend these without thinking twice about it!