If you are only going to have 1 dot, turn around time is a big factor. I have 2 sig romeo 3xls and love the window size. I looked through all the popular dots when I was making my selection. This was almost 2.5 years ago and I am still happy with it. I have had to send a dot off twice and both times got them back within 15 days. Once was cracked glass, I think brass bounced off the indoor range target runner mid cycle at an match and the other was the buttons got too hard to work and it was a pain to turn on.