1 GoCube, 4 GAN356i, and a bunch of 3x3x3 and have more coming in.
So far, I find the MoYu MEI LONG 3M to be the smoothest cube. I've been cubing for a little over 3 weeks and enjoying it. My goal is to break 1 minute, then 30 seconds, then who knows. I've been buying cubes like crazy.