I have one...put thousands of rounds through the SAR 2 and SAR 3 it's alternated on with no problems whatsoever. Battery life is okay if you don't leave it on for a month.
It's bright enough to be seen from shade looking into bright light, which my Accupoint isn't capable of. I've knocked it off my workbench onto the concrete floor twice so far, a height of about 3', with nary a scratch on the unit. I like the choice of reticles...very nice.
I'm quite happy with mine, and was actually gonna buy another one until the price went up 35% somewhere along the way. I think I paid $130 for the one I have, but now they're pushing $200, iirc.
I had one of the weaver rail ones, but sold it...there are better sights out there for an AR, which is what I was gonna use it on.
I suppose I got lucky, but based on my *own* experience, it's the perfect optic for an AK style rifle.
Both of mine came from Tantal, who is a good guy to do business with.