Thanks for the feedback!
Sounds like I can't go wrong with any model.... The eheim recommendations echo what some other forums are saying as well.
I'm looking at this model in the 66 Gallon selection (for my 36 gallon tank - should be enough right? :P) http://www.amazon.com/gp/product/B00...seller=&sr=1-1
Another question... is the return water bar long enough on these to be able to get it either close enough to the water line where it won't make any noise? Or even better, under the water line? This tank is in the living room, so I am trying to minimize noise as much as possible on it.