I like both reds and browns for gaming. Reds are super light and feel very immediate and responsive. Browns do too, bus slightly less so.
For typing however, there were two reasons why I prefer the browns. One, I will always bottom out with reds, because they are so light. Two, I have more accidental keypresses with reds, because they are so light and there is no feedback to indicate when a key is registered.
One thing I do have to say is that I do not feel the term "dirty reds" that people use to describe the browns is entirely accurate. Wile I do understand why they say it, I think that when you say "dirty", it makes it sound as though browns feel like they have added friction, and are somehow inconsistent. My personal experience is that while the tactility is indeed subtle, the switch does feel smooth and consistent every time you hit it, not resembling friction caused by "dirt" at all. But I guess that is just my take, others might feel different.
MY first mechanical keyboard was blacks (a Steelseries, back in 2008/2009). I then went to reds because the blacks were too heavy. The reds were nice and light, which I loved, but it also caused some problems in their day to day use. So I went with browns and loved it. Never looked back. Since then I have had the opportunity to use blues too (on a razer keyboard, but hey blues are blues) and while I like them as well, I just love the lighter feeling of browns.