aquaone makes biOrbs hee hee but purley because of their recent retaliation to the PFK writers in this months PFK magazine i would never ever consider buying from them ever again never had a tank from them but I have had a few products like algae scrappers which just shredded big patches of my tank. But my vote went for Fluval never had one but if i was in the market for a big tank I think thats how i would go with a rena filter 
