Had experience with the SunSun - friend of mine imported them for a while, to be blunt they were cheap and nasty ... suspect the same may hold true for the others too. I'd get one of these Jeff, it will outperform your fluval
http://www.amazon.com/Eheim-Classic-...anister+filter best bang for buck out there imo/e - so simple even I can use one, and super efficient as it doesn't have any trays and the like to mess up flow. They are also bullet proof, I'm currently running one which is over 10 years old.