Here is my opinion on this matter. If we look at how these optics are intended to be used, and then look at your use case, you can easily answer this question for yourself. Let's apply an arbitrary 80% rule. LPVOs are intended to be used at 1x 80% of the time and maybe used the extra magnification 20% of the time. Time/speed is the only real reason to use a top dot/red dot on an LPVO if you have the mag cranked up...or you were in a competition. ACOGs are the opposite. They would be using the 4x or whatever power the ACOG is 80% of the time and that top dot/red dot only 20% of the time. So, if you primarily plan to use 1x, get an LPVO. If you plan to shoot magnified, the ACOG has its place. The ACOG is historically 'tougher' than a LPVO due to just having a fixed power prism rather than the variable power in the LPVO, but ATACRs are pretty rugged in my experience.