I have an Accu-tac and a cyke-pod. I like both. The cyke-pod is considerably lighter, so it tends to go on the PCP when I want a bipod. The accu-tac is much heavier and quite a bit stiffer, so it tends to go on the rifles I'll really lean on.
Are Tripods not allowed in benchrest? I have never done one so I am curious this bipod it ridiculously stable but I still would choose my tripod if I had the choice.