Kelster- You are a braver man than me to let an AD try to grind down your crown guards. Sorry to hear about your watch. I know base PAMs are not COSC, but they should still preform at that level. My sapphire is still good, but I have seen quite a few on TZ that had chips especially around the edges.
Tech- I really wanted a G series 111, but I had an opportunity to get an F series with 5 straps included so I took it. I just love the Panerai, Panerai, Panerai engraving. Not to take anything away from the new engraving, I just prefer the older.