I own all of them.
Blues: Clicky and slight resistance.
Blacks: No bump or click and stiffness as you press.
Between Black and Blue, Blacks if you are gonna game. Blues are not good for gaming, IMO, while Blacks are perfect and are my preferred gaming switch. You can also do lite typing on Blacks but they are very stiff for that.
Browns: Slight bump with slightly less resistance than Blues.
Reds: No bump or click and very lite stiffness as you press. Essentially liter Blacks.
Between the two, I love both and think they are equal. They are cousins, for sure. Don't let anyone ever say they are the same because they are not. They are similar, though, and both are better for typing than Blacks or Blues.
Browns are better for accurate typing and I think I prefer them for gaming too; Browns felt like slightly less accurate Blacks when I played first-person shooters - a fair compromise when the Browns are so much better for typing than the Blacks - but I did just as well as Blacks with them.
The Reds feel like typing on air or butter, but are also more capable of making mistakes compared to the Browns. With the Browns, I seem to type a little slower because of the bump and, thus, more accurately. But Reds may be more fun to type on and I love them so much. They have a very unique feel. Many people have said they prefer them over Topres. For gaming, they rank below Blacks for me due to their liteness. Which one you'd prefer depends on how stiff you like your keys. But with the Reds, you also get a typing keyboard; Blacks really wear out my fingers when I type on them.
So, I would say either get a Brown or Red. They are both wonderful for gaming and typing, and are probably the best two switches for value out there. Maybe get Reds if you find the Brown's bump in your way. Be aware that both are really lite to press but if you give it time your fingers will adjust.
PS: All these switches do fine for RTSs too, but again, I think I prefer Blacks.
