I bought a few of the name-brand ones. One for myself and a few as gifts.
I like em. I was always finding interesting ways of flicking and pushing things for the first few days. The joystick is the best because it pulls out slightly and a magnet pulls it back in. I love sticking a finger under the side of it to pull it out and letting it click in.
Also the side with the gears and silver ball, the silver ball has the best click when you push in on it.
I go through phases where I like one side more than the others though. The spinning disc is currently what I use the most.
i like the silver ball a lot, and the worry stone ---