The basic difference between switches is how hard you have to press the key for it to respond and how quickly it reset back when you stop pressing it and the level of noise. The slower the key the more clicky\loud it will sound.
red's have the fastest response time and typically are the most quite of mechanic switches
you may run in to issue with hitting the adjoining keys because of the increased sensitivity it really doesn't take much to trigger a key, but if you don't have an issue with that the extra responsively will come in handy in twitchy \ reflex oriented games games.
but blues you might not get that tactical crouch off at the right milisecond you needed it, but if your typing a 3 page essay your going to make less typos. And they tend to have a very nice typewriter like clackity clack to them
Browns are kind the mid point. They have some of the nice clicky sound to them, but are more responsive than blues.