Re: bipod height? 6-9 9-13??
I have one of each. I use the 6-9 if I am shooting from a position that allows it, but sometimes, depending on the height of the grass in the pasture, etc., I need the 9-13 to get my sight line out of the grass.
If I were only going to have one, it would have to be the 9-13 as sometimes I need the extra height. Given that you plan to use this in the field, I would go with the 9-13 (unless you can afford both), JMHO.
+1 on the pod lock. I have one on both of mine.