[tunabreath]

I can chime in here briefly, having looked through my teammate's.

Clarity, colour, and brightness are good, about on par with the Leapers offering, and better than most G&P and other chinese scopes I've looked through.
I didn't really notice very much distortion near the edges at any magnification levels, but I didn't look very carefully (more on that later).
I didn't really check in low light conditions, so I can't tell you too much about that.

The illumination is clean, as is the reticle. The blue illumination is... kind of beautiful, haha, just the colour of it. There's no practical benefit there, I just thought I'd mention it. It's not bright enough for daytime use as a red dot/high contrast aiming point, but it's more than enough for indoor/low light use. Again, since I didn't look through it in low light, I can't tell you if it's washed out or too bright in the dark.

Eye-relief and exit pupil seemed good, definitely better than all the other airsoft clone scopes, but I don't think they're quite as long/wide as the Leapers 1-4x. I was eyeing the scope in my hands and not mounted to a rifle, so I can't really compare accurately. I'd guess the eye relief is in the 3.5-4.5" range through all of the magnifications? It's definitely much much better than the combat optic clones (ACOGs and Elcans, and integrated G36/AUG/etc optics). I don't think there's any parallax adjustment (not that you'd need it for airsoft).

I didn't really check any mechanical functions, so I can't tell you about adjustment reliability/repeatability. The elevation/windage are capped. I didn't actually look at them, but I think they're coin adjustable, not finger adjustable. The ocular diopter and magnification adjustment seem solid, on par with the Leapers. The mag ring actually looks a LOT like the Bushnell Sportsman series, so I might already have a compatible cat tail done, I'll look into it.

Now for the biggest problem I personally had with the scope - the magnification range. There's no distortion or fish-eye at the lower end of the magnification because it doesn't acutally go down low, close enough to 1x to notice. For my own purposes, the bottom 1.5x is too high to be directly compared to a "true 1x" like other 1-4x scopes. I haven't looked through any of the newer 1-6x or 1-8x scopes from real manufacturers, so I'm wondering now if they have the same problem. The bottom end is truly 1.5x, not the 1.1x or 1.25x most other low-variable-mag scopes have that mimics 1x so closely that your eye glosses over and associates the images like a red dot/bindon aiming concept.
It basically comes down to the choice of roles you want the optic to fill. The higher top end magnification has its own advantages, and the 1.5x bottom end is still obviously much faster for aquisition/wider field of view than fixed 2.5x through 4x's, but just realize with this scope, you are not getting a "true 1x" style CQB scope.

Beyond that specific delineation of its role, it looks like a very reasonable scope for the money. I'd definitely put it at a notch above most ACM scopes, both in quality and value.