I know it is a small sample size as they aren't sold in more than 1 or 2 places. I like the big collector cup which a lot of the nano skimmers don't have. I couldn't find this skimmer from a reputable retailer so I ended up going with the Reef Octopus BH50 which seems nice (arrives later this week) but isn't rectangular shaped so I don't know how it'll look in the corner of my display tank.