ConsumerReports rated the Clear2O filter one of the best [0]. I've been using it for over 24 months in Pittsburgh, PA and I can definitely taste the difference. I haven't done the math, but I feel like their filters are cheaper than Brita filters. They have published a fact sheet on their website [1] showing what their filters remove.

[0] http://www.consumerreports.org/products/water-filter/clear2o...

[1] http://clear2o.com/download/PERFORMANCE%20DATA%20SHEET.pdf

I have a big berkey filter, I read good things about it though not sure how it compares. Anyone know?

Colour the water but leave the taste - can choose the alert colour.