Although I don't shoot competition, I am a very seasoned handgunner. The most accurate rounds were with Longshot for those heavier 147's. I had previously tried HS-7 because it loads about the same as AA#7, and it was also chronographing at nearly identical velocities. But there is just something about Longshot that made it more accurate with 147's.
But on the flip side, Longshot won't do well with lighter bullets. When I'm loading the 124's and 115's AA#7 is the ticket.
I'm a big fan of Gold Dots and have been loading with them since Speer started offering them. I also like XTP's, however, they are noticably a very different animal. If I don't push XTP's with everything I can muster with, they won't perform very consistently. It may have something to do with the inconsistent weights, where as Gold Dots all seem to be very well made in this respect.