I just got off thier website and was looking at the order form and man they are cheap(price wise but I guess once you add in shipping it comes out almost the same)compared to others I have seen! Which of the 100 grain heads do you use? theiris a 1 inch diameter and a 1and 8th inch diameter.Both are the same price but I am wondering which you use.Is their any difference in permormance? Sorryfor the extra questions.