After seeing a thread about the Holston dot and a Youtube reviewer made the statement that a 2 MOA dot was best so I decided to try a back to back test to better form an opinion. I do have a 3 MOA dot on my G34 and a friend has a G34 with a 6 MOA dot both pistols are modified very similarly. Before testing both back to back I would have recommended a 6 MOA for most pistol applications. When I told my friend what I wanted to do(he owned both 6 and 3 dots) his first response was whats best depends on intended use. Then added that if it would be used outside the 6 MOA is the only way to fly. He shoots competition and outside he was having a real hard time find the dot and if the brightness is turned up it "stars out". I have not tried any outside personally. I shot 20 rounds out of both pistols at 3 distances 10,15, and 25 yards. I did not shoot rapid fire so I can not comment on which one is faster for follow-up shots. At 10 yards no big difference but at 15 yards the size difference was very noticeable and even more so at 25 yards. At 25 yards the MOA dot covered the 4 inch target I was shooting at. When all said and done I did not have a preference either way. I know that is not the answer that anyone is wanting to hear. If shooting fast I think the larger dot would be an advantage and if shooting beyond 25 yards the 3 would be better. And of course the concern with the smaller dot in the bright daylight. It should also be noted that I have fired over 10 thousand rounds with my 3 MOA dot so definitely more familiar with it. I am reluctant to post target pics since they may tell a story that is not accurate. At 15 yards I fired a mag with the 6 MOA pistol that was awful. Also the 6 MOA dot shot low for me and I did not adjust. I will post if you guys really want to see. My advice if one is on the fence (or if used outside)is to get the 6 MOA. If the need to shoot over 25 yards consider the 3 MOA size. Sorry I would not clear this up because I know it tough to choose dot size, especially if you dont have an opportunity to try both.