There is a new 2024 version of the YJ GuanSu 4x4 which was recently released onto the market. It is available for the very low price of just £7 making its primary competition the MeiLong 4x4. Both cubes are non magnetic and provide a good comparison for that price range, however, unfortunately it is pretty clear that the GuanSu does not live up to the challenge of performing better than the MeiLong. If you want to give it a try, then you can buy it here