Mike,I still shoot 2018's. Not exclusively,but I love how versatile they are. Plenty of GPI,and the spine which is a .487 I think,just lends itself to all my bows in the 48-51 lb range. They are not as tough as carbon,but are alot more forgiving in flight for me. Alot of times with carbons if they are'nt just right...I get a bit of "minnowing" to the target. And I have had a bow that is 48 lbs shoot a .500 spined carbon well,and one that is 50 lbs send it all kinds of crazy downrange. I have seen this vise-versa as well. The 2018's just cover it all. rat'