My current preference would be the Harris S-15C as I like the extra 2" going to 27" when sitting, and also like using a short bipod under the rifle butt. I have used the Steady Stix (bi and tri versions), pack, cross-sticks from dowels or arrows, the Claw on a tripod, cradle on a tripod. I have not used a trigger stick tripod, but in the store they seem handy but heavy.