I'd recommend the vertex 100 deluxe. A little pricey at around $350 but it's a really sweet slick unit. I have to admit I was skeptical at first but after installing a couple and seeing them in action well worth the extra money. It has an actual waste ratio very close to 1:1, auto back flush, built in tds meter and booster pump.
The aquasafe units are hit or miss on the quality, wasteful and don't produce anywhere near the rated gpd.
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