My Filstar XP3 came with the aquarium I bought used. I've owned Fluvals (bad), Marineland (not too bad), and other canister filters. This one is definitely the better of the 3. I've never owned an Eheim, but they sure are high dollar versus my Rena. I've never had any issues with it. It's getting a bit old (4 years), so I'm looking to replace it. I'll just put the same old bio-media in the new one. Great filter. Buy it!