Tried to keep it short. I failed.
I read all the reviews and specs of many filters and decided to continue buying genuine Samsung filters. I didn't have to modify the 'teeth' to fit in my fridge. It just worked like the ones I was buying from Lowe's or Home Depot.
Getting them from Best Buy means points and $10 savings by getting a subscription. Thanks for catching up with the rest of the commodity e-tailers.
Why genuine Samsung: We were really tired of spending $50 every six months. One year we bought two so it didn't feel so bad replacing the second one. So we started looking for cheaper replacements. I'll save you the details and give you the bottom line:
Samsung's filters filter out more harmful stuff than the cheaper ones. The cheap ones only filter out 'taste' and one even claims to not filter out "helpful nutrients" so you feel good about buying it. What they mean is IRON because they don't filter out diddly but chlorine and large contaminates.
We get our water from a well and have a Whole-House filter right at the pump. The genuine fridge filters filter out a lot of bacteria, microbes, metals and yes, Iron. Our water is triple-filtered (Earth>well filter>fridge filter) so it's pretty safe, and this is safer.
But if I lived where I had to use "city water," I'd want to protect myself after hearing of so many municipalities’ water systems failing suddenly and large communities being told not to drink the water for the foreseeable future.
Don't let your child be the first symptom to your city's water problems.