When it comes to skimmers I generally look for a couple things. A good review, ease of maintenance and cleaning (basically being able to break it down), energy efficiency, solid build quality, and a reliable pump. Out of these aspects, the only thing that is questionable about my SWC skimmer is the pump. It's an Atman and I've read some not so flattering reviews of the pump. Luckily, mine has been running well (knock on wood)