Product review (5 stars): My thinking on a fridge filter for lead:
The main difference between this filter and the OEM and more expensive replacements is that this does not filter out heavy metals like lead.  My thinking is that if there is lead in my water supply then that is a much bigger problem than a fridge filter can fix!  I only use the fridge water for drinking water, and if I am using a small glass.  If I am taking a big cup outside, drinking from my bathroom cup after brushing my teeth, or when I am cooking I use tap water, so if there was lead in my water supply this would hardly keep my family safe.

We have very high quality public water here in Phoenix, they test and report often.  So unless I want to use water from the fridge filter for everything then a lead filter is, in my opinion, not neccessary.

My $0.02 and probably just about worth each penny!