The Good: very light, has proven quite strong, looks great, a fraction the cost of suspension, doesn't need to be rebuilt
The Bad: definitely not as plush as your average suspension fork
I got this fork to replace a Marzocchi DJ3 (which was essentially rigid once it got cold enough), and I love it. At only 150 USD and no service costs, it's high quality for a very reasonable price. The difference between rigid and suspension on pump tracks and dirt jumps is amazing. Not only can I now pump harder, but I feel a much greater incentive to not case or overshoot jumps. Some things to take into account upon purchasing one of these beauties: your wrists will hate you if you case jumps, and you might want to get some higher bars, as the transition from suspension to rigid will drop your front end significantly.