There are a lot of fidget spinners out there on the market right now and there are just adding more and more types of fidget spinners along with a ton of other fidget toys ie. Fidget Cube, Fidget Sticks, and a Bike Chain fidget toy just to name a few. Just from my standpoint on Fidget Spinners and what kinds I have come across I would much rather a three sided Fidget Spinner compared to a two sided Fidget Spinner. I also personally prefer a plastic one so it doesn't make a huge nose or even break anything if you drop it, I also like how the plastic ones feel in your hand you pretty much just want to find the best bearing in your price range. Ill leave some links for the best Fidget Spinners in different price ranges.
<5$- https://www.amazon.com/My-Fidget-Widgets-Reducing-Anti-Anxiety/dp/B071VVKKDR/ref=sr_1_3?s=toys-and-games&ie=UTF8&qid=1496543815&sr=1-3-spons&keywords=fidget+spinner&refinements=p_36%3A-500&psc=1
<10$- https://www.amazon.com/Fidget-Spinner-Mobile-Rescue-Bearings/dp/B072HZ8CFQ/ref=sr_1_18?s=toys-and-games&ie=UTF8&qid=1496543946&sr=1-18-spons&keywords=fidget+spinner&refinements=p_36%3A500-1000&psc=1
