Im using a simple Lee's airstone driven skimmer and the amount of junk that it pulls out of my water is amazing. In the past when I had my bigger tanks I wouldnt even think about not having a skimmer. But boy howdy, how skimmers have changed. Back then you couldnt find anything but the airstone driven skimmers, now they have all kinds of new fangled devices.
When one sees just how much gunk they can pull out of the water, I think they will be satisfied, and never again be without one.