The weight vs pump rate looks excellent. And the price is good too <img src="/forums/images/graemlins/smile.gif" alt="" />. Since the filters claim 0.2micron filtering, would you be able to do the food coloring test? Put 2-4 drops of dark food coloring in 1qt of water. Filter; then see if the filtered water comes out clear (on both filters).

If this test works, then this is also a good method to see if one has accidentally cracked his filter.