Best bipod that attaches to simple QD stud?

Just wondering what would be considered the par excellence bipod that can attach to a simple QD stud?

As per your requirements Harris HBRMS

BR=Benchrest model 6"-9"
M=Notched legs in 1" increments.
S=Swivel type to adjust for cant.

Add. Pod-Lok for better locking and adjusting of the swivel.

Even though the above mentioned bipod is the best swivel stud bipod I would suggest adding a rail and going with an
Atlas BT10-LW17 for something a lot better.
 
Harris. I like the Atlas on rifles with a rail, but if you want to keep the simple stud, a Harris will work just fine.<script type="text/javascript" src="safari-extension://com.ebay.safari.myebaymanager-QYHMMGCMJR/e43f3fd0/background/helpers/prefilterHelper.js"></script>