How Strange, I was sitting in my garage looking at my clubs thinking I need to dispose of some. I have 3 sets of Ping Eye 2's. A BeCu set with 5.5 rifles, a second set with Dynamic Gold 300's and the last set is original factory zz lite shafts. Just by chance I looked up the shafts and came across the discussion in the sand trap....so here's my opinion. The BeCu set with the 5.5s has a boring trajectory and soft on the hands, my favorite. The 300s are more sensitive to mishits but extremely acurate when hit on the sweet spot, they tend to balloon. The zz lites are somewhere in between, nice to hit but a little mushy. Just saying.....