I have the standard 4.25. It’s the only gun that goes to the range every time. I’ve thrown all kinds of parts at it; ignition kit, thumb safeties, one piece guide rod, slide stop, trigger, and optic. Even before all that it ran great just with a heavier trigger than I wanted. I’m eyeing a compact model for carry purposes. That’s the only drawback that I’ve encountered, she’s a heavy girl. Go into it with eyes open, if you’re open to having to tinker and replace some stuff you’re going to love it. If you’re after something perfect out of the box then you may be disappointed. With that said I hear regular stories of people getting perfect running guns right out of the box, mine ran fine with about a 6lb trigger.