Really great product overall. To me this is a great compromise between a product such as the XS Big Dots and a traditional 3-dot sight. Get the colored dot in the middle of the read sight and pull the trigger, easy peasy. The fit and finish are typical Trijicon and are excellent. The vials themselves glow very brightly at night. The colored front dot really stands out. The paint on the front dot is photo-luminescent and really shines in the sun, much more so than it would appear from the pictures. The black rear is serrated to prevent glare. The contrast between the colored front and black rear is great for drawing and shooting from concealment. Having a notch sight instead of just a post makes it, in my opinion, a bit easier to be sure of your windage. Also maintains the ability to pull off accuracy shots at distance such as on a range. My only negative might be the depth of the U-notch on the rear sight. It's quite deep as the sights are really meant as a combat sight.Only issue is that I noticed you have to bury the orange dot in the bottom of the notch in order for a cover hold to make point of impact = point of aim. In simple terms if I want to hit the bullseye by covering it with the front dot I need to make sure the front dot appears lower in my rear sight, to the point where it doesn't appear to be the same height as the rear. I think these sights are meant for a bit of a 6 o'clock hold. It's not really an issue, just not what I'm used to. At most I'd mark them down 1/2 a star.As another point specific to XD/XDm pistols. The rear sights are press fit in with a hydraulic press, not held if with a set screw. It can be a royal pain in the butt to get that rear sight off. Good advice is to spray it with some penetrating oil and let it sit for ~ 5 minutes. I would NOT recommend trying to remove the rear or front with just a hammer and brass rod. It really takes a sight pusher to break the mechanical lock on these. There are a few decent universal ones and some specific ones as well. Of course you could also just bring it to a local smith, make sure he has the sight tool first, and pay like $30 for the install.