FWIW I prefer reds overall, feels so sexy on my fingers, but its such a close tie, it will always be a very personal choice.
When I switch back to brown for a bit I enjoy the extra definition in the key presses. Maybe it could be a mood thing, good for when I want to bash things out.
I just installed o-rings on my Leopold FC700R (reds), which has lower profile keys in the first instance, and then the o-ring reduces travel further. For me this is more important than the switch type as the higher key travel causes my WASD hand to get fatigued a lot quicker.
Also this does emphasise that what you use it for is important; wasd type gaming, vs. other gaming, typing... and the rough mix of what time you spend doing those things.
It's almost as if I need to get another Leopold to try out browns in the lower profile, then I could do a better comparison... or get some thicker o-rings.. hmm.