+1
I have done side by side comparisons as the sun went down and "NONE" have beaten the now discontinued LPS scopes by Leupold.
J E CUSTOM
Here's how my neighbor and I rated my LPS to other scopes I owned in early 2007, based on side by side comparisons in failing evening light.
With respect to light transmission:
1st - Zeiss Conquest 4.5-14x44mm - Brightest, no doubt about it.
2nd - Leupold LPS 2.5-10x45mm
3rd - Leupold VX3 2.5-8x32mm - Similar to IOR.
4th - IOR 3-18x42mm - Dimmest (Similar to the Leupold VX3).
With respect to resolution, we both rated these four scopes as follows:
1st - IOR 3-18x42mm - Notably the best
2nd - Zeiss Conquest 4.5-14x44mm - Pretty good - similar to Leupold LPS
3rd - Leupold LPS 2.5-10x45mm
4th - Leupold VX3 2.5-8x36mm
Not pick'en a fight over the LPS. Just copied and pasted the above finding from an old post, as I used to own one. I sold mine as the Zeiss Conquest cost less and performed better for me.
My current scope preference is Sightron SIII 6-24x50mm. It performs better than any of the above 4 scopes in light transmission, and is the equal of the IOR in resolution.
I have declared any scopes heavier than 29 oz off limits for the time being. My hunting is almost exclusively backpack hunting. My IORs weigh 29 oz and they're heavier than I care to pack around. One of my IORs will be replaced with another Sightron SIII soon. SIIIs weigh in at 21.9 oz.