The MF7 is awesome! It's really smooth. It is great right out of the box. It does not feel like a budget cube at all. It's definitely better than the Shengshou 7x7.
You cannot beat the quality for its price.

This was a very good cube for the price. It is 71 mm so it is a bit small. Center caps do pop off if you want to tighten/losen the cube, but due to the cube being small it is hard to do. It turns ok but I’m not too sure if it is good for a 7x7 because this is my first one.