I am looking at the 22I and the QDT tripods for PRS. Mostly spotting with the SLC 15s, some rear support some tripod shooting. I like the strength of the qdt, but i like the inverted legs of the 22I. I plan on either the TA3 leveling base or the anvil 30. Is the anvil as sturdy as the leveling base? I have used the TA3 (which I liked) before but not the anvil.