I have the same drive and I'm also experiencing massive speed-ups, I'm quite happy with it. But don't forget that with the Momentus, the SSD acts only as a rea

I have the same drive and I'm also experiencing massive speed-ups, I'm quite happy with it. But don't forget that with the Momentus, the SSD acts only as a read cache, ie all writes must still go directly to the HDD. With Apple's innovation, files that are heavily used profit from being fully on SSD for both read and write.