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I dislike the sandwich plate due to packaging concerns and the permacool's can be iffy due to quality concerns with the casting (search for info). I use a Mocal unit that comes made with -10 connections (no adapters, saves $$) and has an extremely good reputation for quality. I have used mine for years without issue. Flow is very good as I had very little pressure drop after install. Good luck with your choice.
Find them here:
http://racerpartswholesale.com/mocal.htm
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"I think we have more machinery of government than is necessary, too many parasites living on the labor of the industrious." Thomas Jefferson
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