Product review (5 stars): Just buy this one
There are a number of replacement filters for this GE MWF, however, for the few bucks you save, is it really worth the time/effort?

Like most other folks, I've gone and searched, and Amazon has the best price on the original filter. You can find others in the $18 to $25 range that claim to be direct replacements, however, if you read those reviews carefully, you'll see it's pretty much hit or miss. I've seen reviews indicating those others didn't work at all (no water flowing through), some requiring adapters, and still others indicating they didn't create a good seal and so they leaked. Add to that, if any damage is caused to your GE fridge by one of those other filters, chances are that GE won't stand behind any warranty (though I can't comment on that for certain).

It's just easier to get the original and not be concerned about any potential compatibility issues.

You know this one will work.