I'm torn between the two? I've been looking between the TA31F and the one with the DOC. I was thinking of getting the TA31 w/ the chevron and adding a doc? I know some people don't like were the doc sits, but I'm not for the 45degree mount idea either? I do like the fact that LaRue makes a mount that puts the acog closer to the stock! WIth the setup like that I figure I can live with the doc. If I go with a seperate doc which one is better one with a smaller MOA or is bigger better? I figure it would come out to be about 100-200 dollars more for me to get the chevron and add the doc or just get the chrosshairs with the doc already on it?? What is the advantage of the chevron over the chrosshairs or vise versa? Thanks guys.