I'm super new to cubing, so my experience is that of a newcomer - I just hope I use the nomenclature correctly. I've found the cube have a smooth action; the magnets make this much easier to use than other cubes that I've tried. I've found the stability to be a little off, but that may be mostly due to my inexperienced hands fumbling with the cube. however, I've found that the corner-cutting mostly makes up for this, and i can usually recover pretty quickly.
As with most things in life, if it's nice to use, you'll use it more. I'm definitely enjoying learning on something nicer than a k-mart special.