Thank you all so much for your input! And I remember that "trick" of boxermom's... pretty cool!
After doing some more research, I heard a number of people "not liking thier Biowheels too much" and HIGHLY praising thier Aquaclears... so I think I'm going to go with this one ...what do you think?
awesome! that's the one I was going to get for my 10 gal, too. I still might. The old Whisper 10 that came in the kit is going to crap after 3 years. Whispers don't seem to last very long. Aquaclear I've heard are great in terms of longevity and performance! I dont' think you can go wrong.