The Good: Have had this on my dirt jump bike for 2 years. It's been great. Stiff and solid. Never have to mess with it. I have the white version and it has a durable finish. Black is probably even better. Nice looking stem too. Never worry about, it just works.
The Bad: Maybe a few more length options. nit-picking here, Can't think of a bad thing.
Great stem and would not hesitate to recommend it.