Overview:
For such a relatively old cube, the WuQue has stood the test of time well. However it is likely that when you open the box and do those first few turns, you will wonder what all the fuss is about. The solution is you need to set it up and then do about 500 solves on it before you unlock this cube's full potential.
This cube is my current 4x4 main, however I expect this to change when I get a Valk 4.
Setup:
Lubicle Black, Angstrom Gravitas/Dignitas, DNM-37
Medium-tight tensions
Springs compressed by 1mm
Speed:
The cube is very slow out of the box, and takes a lot of effort to turn. The inner layers are slower than the outer layers, but both layers hold together very well even without magnets. This makes edge pairing very nice in solves.
Magnets:
This cube is from before magnetic cubes were mass produced by manufacturers. Therefore to have a magnetic version you need to magnetise it yourself or purchase one that someone has done. Mine has 3x2 magnets in the inner layers, and 4x1.5 and 5x1 magnets in the outer layers. This results in the magnets helping but not being intrusive.
General feel:
This cube can handle OLL and PLL parity quite well but you will have to set the tensions quite tight to minimise pops. I have not found a way to eliminate them completely, but due to my turning style I don't often get them anyway. It is usually the small internal pieces that pop out when it happens. Corner cutting is better than that on the AoSu GTS2M, but again, only when you have the tensions set tight. Otherwise the cube will just explode.
Final thoughts:
I would recommend this cube to anyone who has the patience to spend a good few hours setting this cube up. Once it has been set up correctly and you have done around 500 break in solves it becomes better than any other 4x4 currently available.