This is the new design that no longer uses the stiff green hoses. I like this filter alot. My only gripe would be that it doesn't come with any filter media other than sponges. I went ahead and added a 2" layer of Eheim substrat pro myself and I've only washed it once since I've bought it. I think I've had it for almost a year now.
Perfect bang for your buck canister. Not recommended for tanks smaller than 40g.
So why is it that for some people it doesn't work? I've read reviews that involve leaks and whatnot.