I currently have 4 different switch types here for review purposes (I can post the review here on OCN too if there is interest). Black, Blue, Brown and Red. I really wanted to get some clears, but they are difficult to find and the CODE keyboard is delayed 12-14 months.
So far for gaming I love Reds. At first I found them too soft, but after a couple weeks I loved them. By too soft I mean I was activating keys when I didn't mean to and I had the habit of resting my left thumb on the spacebar, and the weight of my thumb is enough to activate a red switch. I was bottoming them out constantly after using a membrane keyboard over the past couple years that required some keys to be almost hammered down to activate. I noticed while resting fingers on certain keys and pressing others sometimes I would accidentally activate the resting finger's keys, but I got used to this over a couple weeks.
I thought I'd like blacks more as I was coming from the softness of reds and a 10 year streak of cheap membrane keyboards so I thought I was a heavy typer. But they weren't what I expected. Maybe a little too stiff. I like blacks but I would not choose to keep a keyboard of all blacks. To me backspace feels like a chore, as does spacebar and a few pinky keys to some degree. I found myself really hammering away at the keyboard, almost needed to bottom out, but that could just be from getting used to soft Red linear switches. I'm sure I could get used to blacks with some more usage. If there was an affordable way of trying a hybrid keyboard of blacks (60cN), Reds (45cN) and something in between like a hybrid linear switch using a Blue (50cN) or Clear(55cN) spring, it might be the perfect gaming and overall keyboard for me.
Blues are just plane amazing to type on (coincidentally, this is the cheapest keyboard I have here, and a switch type that does not cost extra from most manufacturers). While I'm not fond of the CLICK-the pitch just CUTS through everything around me, you are positive when the key actuates. I type without any typos. Its hard to explain, but they just feel right. It could be from learning to type and typing on buckling spring keyboards for so long (IBM Model M). I have not yet gamed on Blues, so we'll see.
Browns are alright. The bump is good if you touch type, and don't want the click of the blues. The actuation force is nice. While the spring is the same as Reds, the tactile bump gives a little bit of resistance so it feels like a very solid key. The first thing I noticed though, is they almost feel like a dirty key. Like a dirty linear key with how the resistance of the bump feels. I'm not sure if I'd pick a keyboard with browns if Reds or Blues were available, but I wouldn't remove a keyboard from my list because of the browns.
Switch types are just a huge personal preference. You have to find what you like, which is why I wanted to spend a couple weeks with the more common switches.