I'm really leaning towards getting the Heinie's for my XD. I've heard nothing but good things about them. The Dawson's seem to be more like Target Sights, so I guess it depends on what you want to do with the gun. Seems like you should go with the Heinie's for fast target acquisition. I'd like either, but I think for my XD I'd go with the Heinie's. The Dawson's I'd get for a different gun, or if I was tweaking an XD for accuracy.