I have been looking around and cant find any reviews using proper sound equipment and a true experimental setup to say which can does the best job.
So it looks like about $300 ish for probably OK units.
Strongly tempted to go buy a sound meter and go test some.
sound meter - Free Shipping - DX
Maybe if a few ppl near Kaitoke/Wellington want to come along with their unit(s) we can run some tests.
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