it's money you would waste on a different gun instead ? sorry @L3wisD
I own one never used it yet but it's incredibly clear when looking through it and I've looked through the 1-6 vortex (which was also incredibly clear) if you get one get the honey comb flash kill for bb protection. I paid £70 for mine from a UK seller no scope rings bit did come with the honeycomb ring. My friends was £66~ from china with rings and flash kill but he needed higher rings anyway and it took like 7 weeks.
The biggest argument I hear for using them is not for target acquisition but bb trajectory tracking to get on target.