Whatsup brodie,
So, I have the KB 5181, Filco Blue Cherry, Filco brown cherry, Compaq Mx 11800, G86 SPOS board, Compaq MX 8100, Dell 101ATW. I these keyboards particularly in a work environment so I need them to be less loud. My fav board is the MX 11800 (see my post in the reviews section) however if I were in a closed office with no concern about sound, I would say it is a close case between the Filco blue cherry and Chicony 5181.
The brown cherries are not *that* tactile, and I bottom out all the time with them. With this in mind if you go with brown cherries, consider seriously getting a PCB mounted board with brown cherries, as bottoming out is great fun on these (much less so with the filco brown cherry board). Even though the cherry browns are not that tactile, they are still the bomb.
I have not experienced topres, and expect they would be nice. You gotta decide on what volume you can tolerate, and if you are looking for a quieter board you will probably want to go Topres or Brown cherries. If you don't care about nose and enjoy the crisp snap of the KB 5181, you should be heading in the buckling springs direction or blue cherries. But arguably the KB 5181 switch is better than either. I don't know, if I had a KB 5181 with straight enter key and large backspace I would consider it the best board ever (if sound is no object)