Cheap route. Get some tubular webbing in your desired color and width. Make your own. I got 25yrds that'll last me a long time. When the two I made wear out. I'll make some more.
On the retail side. I really like my MS3 with the QD. I can go single or dual pretty quick and the adjustment is pretty straight forward. The MS comes in various flavors depending on what kind of mounts/clips you want to run.
Tough question, for me anyway. I've never given a sling much thought. Whatever is on a gun that's what I use. Maybe I need to consider what type of sling to use a little closer.:embarassed: