I have several, all pretty good. Last year, I made a huge jump in the cost area, $850 for a Bubble Master 250. It's on my very heavily stocked 210 and does a great job. I feel I got my money's worth, as it is a much better skimmer than others I've had (Euroreef, AquaC). I really value my fish, and decided it was time to bite the bullet and make the investment. I've seen them recently on sale for $650 shipped, wish I'd gotten in on that deal! This skimmer and my chiller were two key pieces of equipment.