Seems to be a pretty good consensus here.
I like the Harris 6-9" swivel with notched legs from a bench. The 9-13" is too high for my rear bags. The 9-13" is good for prone but there aren't a lot of circumstances where I shoot prone. I usually set up the bench for rockchucks, sagerats and pd's. If you get the Harris "S" model, you might as well budget in a Pod-Lok. You won't be satisfied until you put it on.
For calling I like the Stoney Point Rapid Pivot Bipod sitting/kneeling model. The Harris isn't quite tall enough for me especially on a slope. Plus I can remove the RPB between stands. Its not as noisy as a Harris but I can still lift my rifle and swing it to change directions without having to move it as you would with sticks. And, it can still be adjusted for height by widening or narrowing the legs. Best of both worlds IMO.
Good luck.
