Can you get more specific on the Versa-Pod bipod? There are several such bipod models. I have several good rifles, with good scopes, and ammo that shoots well from each, but I have not yet chosen bipods. What should one look for in the bipod, and what do you get for the high end bipod or high end Versa-pod bipod, that you don’t get for less money (lighter? sturdier? more features/adjustments?, etc.)?