Red Switch = Easy to press, but also easy to make typing mistakes. Quietest of all the three types. Blue Switch = Requires some force to press, gives audible feedback. Good for typists, might bother everyone else around you. Brown Switch = Somewhere in between the Red and Blue. The blue switch also has the lightness of the Red switch, a tactile feel that is close to a membrane keyboard. Brown switch is ideal for those who are new to a mechanical keyboard. Red Switches - Linear Without Bump. Red switch requires less force to actuate and light. It is very popular when typing. It will feel like flying between your fingers. Brown, on the other hand, works well for both. Regarding noise, they are both pretty loud when I type fast, and quiet when I type softly. The K2 Pro is only slightly more expensive than the K2 and a hundred times better. Since it sounds like you're new to mechanical keyboards, I recommend the Hot Swappable option, so you can easily try other Red is linear, there's no click sound really, just the switch sound, there's no tactile feedback like brown, you just press it slightly and the magic happens. I had red, gone back to brown for a little because my keyboard is faulty, so from my g915 I am back to my k95 vengeance (not platinum, the old ones). .

red switch vs brown switch sound