your choice is between reds and browns?
and you have experience with blacks and blues? hmm...
and keep in mind that, when it comes to key feel, there's only like, a 10% difference between browns and reds. They're almost identical..
that said, since you already have a board with MX blacks, you pretty much know the score with linear switches... so..
i'd choose browns, no question.
You'll probably like tactile switches.. most people do..
and please disregard any ignorant brown MX "dirty feeling" comments... that opinion totally baffles me b/c reds easily feel the most friction-y out of the whole MX lineup. I mean, when you combine linear action with a light spring, all you can feel when slowly depressing a Red MX switch is the grainy friction between the slider and housing... At least with the browns, that graininess is masked by the tactile bump to some degree...