Product review (5 stars): 2014 purchase - IT FITS AND WORKS GREAT!
I was a bit hesitant to make this purchase after reading some of the "FUD" reviews (intended to create Fear Uncertainty Doubt).  It's possible in the past there may have been fitment issues, but I can attest that if you have a GE MSWF filter this unit fits perfectly.  I followed the advice of other Amazon reviews and used a *small* stream of water from the faucet to pre-fill the filter with water before installation.  The filter openings are small, so you have to go slowly and shake a couple times to get all the air bubbles out.

Build quality feels very similar to the GE unit.  I'm very glad I took a chance on this unit, because big name manufacturers have to learn to stop gouging consumers on consumables like this (water filters, ink cartridges, etc).  Hurrah for the (Amazon) free market offering a quality alternative to the pricey name brand!