I recently spent an hour hitting the AP3 in a custom fitting while on vacation in Hilton Head Island, SC. I very quickly became familiar with a shaft that was never on my radar. After hitting about four different shafts in an AP3 - 7 Iron it was an obvious pick - Project X (PXi 6.0). Hands down - Long, Staight and pretty Consistent. I was wondering if anyone has had positive results with this shaft. My swing speed was in the 78-82 range with a 7 Iron. I really enjoyed hitting the AP3 with this shaft.