RS3M is definitely the best cube for only $10. Colors, turning, feeling, magnets - everything is as good as on the Weilong GTS3 (the magnets might be too weak for somebody but for me they're just fine).
THIS IS AWESOME. I baught two and it is just the best decision i made. The product is really high quality for this cheap price. Its super sensitive so you dont have to worry about your timer not stopping and the mat just feels really nice. I would recommend this to everyone.