The 509 trigger seems to be getting a little better with use.
I've got around 400 through it so I'm hopeful as the ergonomics of the pistol are great for me, but the trigger is stil soso.
I have the Arex, the "Sig clone" and it's a pretty darn good shooter.
Feels great in my hand, nice trigger although it feels a little hollow, kind of cheaply if,you guys know what I mean.
But all in all it's a bleep good gun.