Hey, I was just wondering what the cube with the smoothest feel and greatest performance is. I'm not expecting one answer, because I know there are many opinions, but honestly I have no idea.
Guhong is very good if you are looking for a smooth cube with good performance. I just got one, modded (each) edge in 12 spots, and (each) corner in 6 spots. That's quite a lot of modding, but it's definitely worth it.