I'd rate the MX switches I've personally tried like this:
1. Clears
2. Blues
3. Browns
4. Blacks
I really wanted to like the blacks, but with no "feel" - I'm just pushing on a spring and its pushing back.
I love the feel, sound, and weight of the clears. Similar to the blacks, but when they activate - I know it, dammit! Love it for gaming and typing.
For pure typing and if you don't mind clicking away, Blues are great too. Browns were just way too light for me. I assume Reds would be down with the Blacks.
Haven't had the opportunity to try a Topre, but they seem like a good balance.