Got the blue one. My mom loves it. Tweaking it to get the bottom to turn as easily as the top. Having a helpful check list to get it to spin well would be nice. Very pretty to watch.

Update.  A engineer friend looked at the spinner for us.  It has a small design flaw.  If you take the top off the bottom spins fine.  But adding the top back on puts too much weight on the bottom piece to spin as nicely as the top does.  If there is a way to fix it, I would love to know how.  My mom really is enjoying it.