The Speer UQ is designed different than other UQ out there. There is a flat piece of fabric that goes against the bottom of the hammock and the baffles hang down from that. There is no chance of compressing the insulation. It is also easier to attach; it clips on to each end of the hammock by a biner. No adjustments required.
On the other hand the JRB quilts work great also. They are time tested and also can serve several functions: UQ, camp clothing, and a top quilt. They have a steeper learning curve in setting up, but once the technique is mastered it becomes like second nature.
I guess it all depends on what you really want from that particular piece of gear.
“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it."