I did not find any technical reviews for that power supply so I have no basis for rendering an opinion. I looked at a few reviews of other Kingwin psu's. The psu's produced mixed results. Not exactly my idea of stellar performance.
The Mach 1000 seems to be okay according to the technical review I read. Some of the other series didn't do very well in technical reviews.
Brands such as Corsair, PC Power & Cooling, and Seasonic have a reputation for high quality. They consistently earn high marks in technical reviews. They are stable, reliable, and come with a five year warranty. The Antec Eartwatts series would be a good alternative.
As has been said, no one has done a rigorous review of the Kingwin Lazer. And Jonnyguru gives the Kingwin Mach 1000 an "8". I'd be interested in what positive review you've seen on those. In any case, why bother - there are lots of *KNOWN* good ones.