I'm doing research of my own for an article I'm writing, and have obtained some samples; here's what I've found. I shoot several bolt action rifles, and an Encore rifle. The rifles (Remington 700's) work equally well with a couple of crossed sticks, a monopod leaned against a woodfence post, across my old army rucksack, tractor seat or Harris or Shooters Ridge bipods. The Encore, however, is extremely sensitive to any change in forearm pressure, and relatively minor changes seem to cause vertical stringing--except when I use the Harris or Shooters Ridge bipods. So, here's my conclusion.
For Encore, 17AH, 6.5-06 or Muzzle Loader, prone, I would choose either Harris bipod HBR 9-13 or Shooters Ridge 9-13--from the bench or prone. The other position I use almost excusively with the Encore, is sitting using a Crazy Creek stadium seat, all cinched up tight and either Harris HB25 or HB25C-S. This the only way I can get the Encore to perform minute-of-angle effectively--and it actually becomes about 1/2 minute of Prairie Dog, way out there! Won't work any other way for me, though. By the way, for stalking, I can use the Harris HB25 and shoot prone if the shot presents itself; the HB25 will work prone, or from the bench with a pad on the chair. The HB25C-S will only work sitting position. The Remington bolt actions shoot well with crossed sticks, monopod or rucksack--but find I'm growing to prefer the stadium-seat and Harris bipod for Prairie Dogs. The Shooters Ridge bipod, is cheaper but I don't feel it may be as durable, and the one I have doesn't have the swivel feature.
f I was going to take advice from someone, looking at all the versions for hunting, and buyng my first one I'd take the Harris Bipod Model HB25 as the best all-around and look for a bargain.
Just my humble opinion, what works for me.
Shotgun