I have the 175 and the 500. Obviously, 175 is not even in the same ballpark as the 500. I haven't tried moving the 175 around much, but I wouldn't expect *too* much from the 175. Again, my perspective is skewed because I have the 500 as well.

Given the choice, I would not have gotten the 175. The size limitation (small space to put the sub) forced me to get the 175.

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Denon 4520, EPIC80/500/VP180 Speakers