Perfect but kinda expensive - Holosun AEMS Core Red Dot Sight 1x 2 MOA Green Dot

Green dot is the way to go for me. I love the functions to turn off and on especially. To turn it off you manually you hold plus and minus buttons simultaneously. To turn it on you just press any button without holding it which i absolutely love. Not sure why the sig romeo xdr couldnt do that but thats why this holosun is double the cost. The one thing i dislike about this holosun is that it takes 10 mins of no motion to automatically turn off. The sig is 5 mins. I guess everyone has their ups and downs. All i care about is being able to turn it on by a single press of any button. Like who wants to have to hold a button one whole second in a self defensive situation? Holosun is my favorite of cheaper end high quality optics now.