I've got the Mafex figures. Here's a video showing all 4 together. It's in Japanese but you get the picture. There's other reviews on YouTube.
https://www.youtube.com/watch?v=LYwI1KhYSYAThey are very solid releases. Mafex has a known quality control problem but all the 2001 figs I have were issue free.
And here is the video preview from Super7 on their 2001 figures, which haven't been released yet.
https://www.youtube.com/watch?v=eaNxPRrwKiIHaving both mafex and super7 figures I think you will find the Mafex more easier to pose around (easier to move limbs) and thus fun.
But if you like the sculpt on the super7 and plan to have them more static on a shelf maybe you might wanna go with the super7.
