Smartfilter

I dont own one, but they look like decent filters. Although, they are pretty expensive for a HOB filter, and I dont think rena has experience making such filters. They also dont have bio-wheels.

(for now,) I'd stick to the more common brands such as marineland or penguin....they're been put through years of use and have a lot of positive feedback.
 
I have the smartfilter for up to 55 gallons. it has worked great so far the only prob is after 6 months of use you have to do a complete tear down of the filter and clean all the channels out. was not to hard to do that just took some time. instead of a bio wheel they have there bio stars all the way to the right of the filter i think it holds 12. all in all id say it works pretty good. i like it.
 
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