Just saw this on Reddit. Gotta say dude's a pretty dedicated Dota fan:

Finally made the switch to mechanical KB by getting the Rosewill RK-9000 (Blue) today. Shoutout to HeavyArm for displaying all the MX Switch colors for testing at the shop. Really ended up loving the blue switch (I'm so heavily obsessed with the sound and texture I'm constantly finding excuses to type now).

The red switch was kinda weird. Your fingers tend to 'sink' in as you press the keys resulting in chances to make a typo mistake. Didn't like the black and brown one as well. Blue is the perfect one for me