FPS, minus "suregrip", an Ultra/XG by another name. Used sell them on ebay for significantly less than Ultra, especially when bought in lots of ~6. Haven't seen mention of them in a long time, be surprised if still being made.
FPS7317 looks unsurprisingly excellent. And without the "suregrip", I bet if using a cap wrench for removal, infinitely better/easier than the Ultra.
Thanks for c&p. Using an original A01 now, hard to find.