Every feature in this megaminx was either very good or very bad. No in between. Heres a quick breakdown:
Good:
* Very good colors
* Very gripy glossy plastic (feels like UV)
* Looks amazing
* No logo (blind legal)
* Very stable
* Noticable Core magnets
* Auto-alignment works (~line-to-line)
* Large, easy to find edges
* colors are easy to differentiate
Bad:
* Catches often
* Non-existent reverse corner-cutting
* needs break-in
* No black pieces
* corners fall apart very easily
* spring tensions were not even out of the box
Overall, I do not recommend. if you want a budget megaminx, buy the YJ YuHu V2 instead. If you want a ball-core, buy the DaYan Pro. This megaminx. This megaminx is better than the YJ MGC, but not as good as the YJ YuHu V2. That being said, I got a new PB single and average on my first solves on this, but it didn't feel good or fun to use. It was just very easy to find and identify pieces. While solving you will need to keep checking the corners to make sure none will fall apart. if you use this seriously, you will want to glue the corners together. Overall this megaminx's main pros are the noticable coore magnets, good colors, and good look.. I cannot stress how good this megaminx looks and how nice the plastic is. (feels UV coated). The turning feel is the opposite of smooth.
Images show YJ MGC (left), ShengShou YuFeng (center), and DaYan Pro LM (right). Images also show White, Tan, Yellow, and Grey/Black face for color comparison. Colors are very easy to tell apart on Shengshou in real life.