Cherry Black. Without a doubt. Cherry Black is a much heavier Cherry Red, where the Red bottoms out at around 60g, the Black botoms out at around 80g.
I absolutely love linear switches and the Cherry Black is easilt Cherry's best linear switch.
I used to use Cherry Blacks in my custom mechanical keyboard until I found the Cherry Blacks too heavy for usage in gaming. They were amazing to type on though.
I had my Cherry Blacks carefully hand-lubed with Krytox 205g0 lubricant to make them even smoother than before, and they were a breeze to type on.