How do all these switches compare? I'm currently using a K70 which I love, but of course I'm back to obsessing over all the latest boards and switches. In particular I'm interested in how browns compare to Romer-G (Logitech G810 Orion) and Razer (Blackwidow Ultimate 2016). Has anyone tried all of these switches? I can't find any Razer/Romer-G comparison videos on YouTube.