I loved the V3, but I didn't love the noise, magnets coming loose, and overall low quality control. V4 Pioneer feels solid, but probably a little TOO solid. Feels pretty decent with settings out of the box and a little lube. But it feels heavy and clunky, and I am experiencing lockups out of the box as well. I was hoping for a V3 with the issues solved, and this feels like a completely different cube. It may appeal to those with a heavier turning style, but I prefer the V3 or the wrm v10 better, even with their issues.