The Moyu RS2M is Moyu's 2x2 in the RS line. Out of the box, it is very fast and smooth to turn, so we recommend that you get TheCubicle Weight 3 or Weight 5 Lube to slow it down a little bit. The other cubes in the RS line are: the Moyu RS3M 2020 and the Moyu RS4M
The cube turns really well, especially when lubed! It is, however, quite small, and there is a bit of a catching problem when turning at high speed.
Still, it's quite cheap, so you can't have everything at this price range.