Well we could go on forever, I still obviously don't agree with all your points and you obviously don't agree on mine. We can always find something pick at and spin against one another so before this gets out of hand again I'm agreeing that closed loops are a good option if done correctly and the space is available. However I personally prefer the use of certain power heads for the reasons stated and not because of my lack of experience or knowledge of closed loops.
I would have been better to have this discussion with a broader audience, I find threads like this quickly die on this site and you end up in this exact position
Not that this would particularly prove anything but I think it would be interesting to setup a poll or two to see what other hobbyists find and believe works before for water flow.