Another linear lover here! Let's expand the minority.

)
After several weeks of heaving using(about 10 hours per day) on the 4 common cherry MXs, I think maybe I love black most, then red. Say byebye to Brown/Blue!
The 4 MXs' competition from my experience:
(The match between brown and blue is insignificant for me and I'll show you why after a short while.)
1.typing.
Recently, I did 200 typing tests(50 for each MX) and keep all the records, e.g., wpm, valid keystrokes per minute, invalid keystrokes(typo+correction) per minute, and so on. Here is the result from some basic statistic analysis:
Average typing speed: black(170.1wpm) > red(166.7wpm) > brown/blue(less than 155.2wpm, don't care).
peak speed: black ¡Ö red(197wpm) > brown/blue.
trough speed:black(155wpm) > red(151wpm) > brown/blue.
So, I type fastest on black. Typing on black is also the most stably.
2.hand feel or typing feel.
My preference: black ¡Ö red >> brown/blue.
I get the richest touch feedback on black. The powerful bounce to my fingertip just make me feel substantial and satisfied. Typing on black is somewhat like dancing on the piano. I bottom out the least on black. Mostly, I press down a key before the last pressed key fully floats up. It gives me the most fluent and continuous typing experience.

On red, the general feeling is like on black, but weaker. It seems a lack of something, and my mind feels a bit vacant. Anyhow, it's another kind of experience. Red feels lighter, relaxed, flexible, while it still bouncy and has nearly the same efficiency as black. I bottom out some more than on black. Not sure whether I really like black more than red. Both are very charming.

Typing on brown is sandy and wobbly. Not very enjoyable for me. The subtle tactility makes me feel laggy while typing or gaming. IMO, the tactility on brown/blue can help many of us keep typing pace, but not for me, it disturbs my pace quite often.
Blue, another charming mx. In fact, I really like blue, just as how I like black and red, maybe not that much. I say no to it just for its noise, which makes me killed by my gf several times.

3.fatigue.
So far, I don't feel any fatigue from those 4 MXs. I psychologically believe red is the easiest to type and the most efficient in the long run, not sure whether it's true or not.
4.typo.
I does feel I get a bit more typo on red/brown than on black/blue. But lukily, it turns out that they are almost the same based on the statistic analysis, so I will try to not worry about it from now on.
5.gaming.
I prefer to choose the most comfort and reactive to play, in my case, black/red.
A few words, I never casually press some keys down while I rest my fingers on mx red. For double-tapping, black seems a little bit faster than red, not quite sure, but they're definitely faster than brown and blue, imo. For accuracy, no difference, as I said before.
I've sold all my brown/blue by yesterday. For black and red, I don't know which is my favourite.

I only know I love Linear switch.