Tactile bump is superior in every genre. It just take a while to get used to. It feels "mushy" at first for WASD movement, but after a while it even feels natural there.
I own a leopold with reds and a ducky with browns. The leopold is better constructed and I would advise not getting a ducky 1087 with affordable alternatives available these days. I've played fps, rts, and MMOs at a competitive level (and been sponsored in two out of the three genres.)
Linear will feel natural coming from a rubber dome keyboard. Objectively, there's nothing wrong with either switch. The biggest difference while typing is when you are doing a site like typeracer or some other type of timed/accuracy tested typing. With browns you 100% know whether you hit a key or not and how many times you've hit it. With reds you can second guess yourself at times, and it will slow you down a bit. For actual use there's no huge difference. I probably mess up the same while programming, writing papers, typing scientific papers, grading, or doing day to day stuff.
If you want to decide based on feeling:Reds
Force required ramps up linearly, even after actuation. It's not obvious when the key was actually pressed.Browns
You push the key and feel it "give" after actuation.
I'm typing on reds right now and I wanted them for a long time after reading about them, but I feel browns are functionally superior. That give is a slight advantage compared to not physically knowing. There's no actual downside to the browns either. Just look at the force graph of browns and reds here
. Red/brown have almost identical resistance while held down. It's a myth that red is better for fps games than browns, and those graphs show you exactly why.