I'm weighing my options here as I get ever so close to purchasing my Mac Mini. Both are OWC SSDs... In the red corner, there is the Mercury Extreme Pro 120 GB with 7% over-provisioning and a three year warranty for $320 (£206). In the blue corner is Mercury Extreme Pro RE 100 GB with 28% over-provisioning and a five year warranty for $370 (£238). 20 GB more storage seems as though it would be a no-brainer, though the five year warranty and higher percentage of over-provisioning is tempting for a little bit more. So let's see what the users here have to say.