Brown feels like broken red... this is to people who've used red.. it feels like a grit of sand got stuck in the red slider.
I do not think that is true for just everyone. Though that could be how some people feel.
When I started to get into mechanical keyboards I had a Steelseries with blacks that I found too "heavy" to use. I switched to reds, but the problem for me was that even after using it for over a year, accidental keypresses remained an issue. Don't get me wrong, the reds felt really good when touch typing, but the accidental keypresses kept being a nuisance to me ( and I am a decent 70 WPM + with almost no mistakes typist). The problem was not only that I hit the wrong keys, but also that sometimes I wanted to type "this" and instead I would type "htis". That is, keys registered before I intended them to.
So I decided to try out browns. Even though they have the same actuation force, some people on overclock.net (was not on geekhack at the time) mentioned that their tactile feedback might remedy the problem. One thing I really liked about them, is that they still felt nice and light like the reds. But there was also the added benefit of a slight tactile feel. There were two advantages for me. One, I like the tactile feedback of the browns. It is subtle enough to never bother me, but pronounced enough to give your hands that satisfying click and feedback that a keypress was registered. The other advantage was that I no longer had any problem with accidental keypresses. I think the tactile feedback assisted the muscle memory. With the reds, I would accidentally hit and register a key before I knew it. With the browns, I do not press a key past that "tactile bump" unless I intend to. But I do not think it is a case of one being better than the other. Instead it is more about which of the two suits you best. I have used both browns and reds for such a long time that I can say that beyond a doubt, I prefer the browns ( I even sold the board with reds) , even though I could certainly also live with reds, and can even understand that someone with different typing habits may prefer that to the browns.
When it comes to gaming, I also do not think there is one best gaming switch. For FPS, reds were nice, since they feel nice and light and responsive. Controlling movement with the WASD cluster is most natural with a linear switch (even though using browns never bothered me in this regard). However, when playing RTS (Starcraft 2) I had the same problem with accidental keypresses as I had when typing, which is why generally for me, the browns are the ones I prefer for gaming as well. Though I also think there is little to be gained from a keyboard in gaming. You see those Korean SC2 pros using rubber domes and it does not seem to bother them. And in other games (like FPS) the keyboard is not the most important peripheral, and its use is generally so basic that it wont make a huge difference. So you should go by what feels best, as opposed to what you think will give you some kind of theoretical advantage.