GregMat+ word list vs Magoosh vocab list

Hello.
I have heard a lot of cases where people are using the Magoosh vocab app, skipping the advanced words, and instead, mixing it up with GregMat’s list.
Can someone enlighten me about the effectiveness of the reverse strategy, wherein, you used GregMat’s list as the main reference and later mixed it with Magoosh?
Or has anyone just used GregMat’s list and given the GRE? Still deciding on the list I need to make my main focus.

Focus on Greg’s list first and then move to Magoosh