This page shows the differences between the Yubikey types, scroll down for the chart. The Neo supports everything and is $50, you can get it from Amazon with free shipping if you're a prime member, the Neo-N doesn't have near field. I just upgrade from my Standard, but haven't gotten around to setting it up with everything, just LastPass, which allows me to use multiple Yubikeys if I want. Yubico sent me an e-mail to a PDF a few days after the purchase about how to set it up with FIDO, which I haven't done yet.
Edited by Kilroy, 07 November 2014 - 06:53 AM.