LOL - I should write a review. I'm not sure I do "prefer" it. I wanted to try one out so arranged a trade. Although, I like the Vortech, I also liked the Tunzes. The only preference I have at this point is the Vortech is what I have in my tank. I still have one tunze 6055, but it needs a power supply. I thing those run about $50 on Tunze's site. I will likely either use it or trade it out for another Vortech in my future 60 cube build.