Something with notched legs and a swivel. I find the bipod super convenient hunting just for the fact that when I sit it down I dont have to lay it on the rocks or lean it against a tree.

I prefer the versapod for shooting off of hard objects, much less spring in the legs on the follow-thru. In the field I use the versapod and harris interchangable with good success on both. One note on the versapod is that it sits up a bit high with the way it mounts. If I plan on using it on a regular basis I will set it up with a spud in the end of the forend, this drops the center of gravity by a significant amount.

Here is a versapod using an end mount. The end mount is not super high tech, drill a hole and epoxy the pin in.
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Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper