Now, this is my second 4x4x4 (my original was a Rubik's brand) and my second 2x2x2 (that was a Eastsheen as well, I only bought it recently. I figured the price of buying the 4x4x4 and the 5x5x5 separate was only a pound less, so I figured I'd get another 2x2x2 for that pound. And let me tell you, well worth it!)
But let me say, these cubes are AMAZINGLY smooth, no lubrication required, even for the 5x5x5. The 4x4x4 is SO much smoother than the Rubik's brand, and I have to say, for cubes (2x2x2, 3x3x3, 4x4x4 and 5x5x5 are the ones I currently have) I will honestly, never get anything other than Eastsheen again. Now I've got to go attempt these cubes.
5 star on everything, and keep up the amazing quality Eastsheen.
P.S. PUZL is ABSOLUTELY amazing on deliveries. In the fortnight, I've ordered this set of cubes, a 3x3x3 cube and a 2x2x2 cube from them, all with 3-5 day delivery. All the products came in 2 days, one less than the postage I paid for. Amazing company, amazing product.