Ok If you have a short attention span and just want to know if this is good or not, Its AMAZING!
Anyway a bit more in-depth, this lube is basically the key to making your cube feel like an old plastic dayan 2x2, This lube makes your cube smoother than a cube overlubed with lubicle silk and makes your cube have a controllable speed and dosen't feel gummy at all. A little bit of this in my original GTS made it so smooth ( smoother than a Valk mixed with a dayan 2x2 ) and Super fast ( adding a lot of this lube or some weight 5 would get it more controllable ) and thats saying something because the GTS 1 was the scratchiest cube I've ever felt.
Anyway this lube makes your cube super smooth and fast/controllable and if I were you I'd pick this up in a heartbeat!