Which civ do you hate to get as a neighbor? For me it's Russia they seem to always be just a little stronger than me no matter when I go after them. Everyone other civ seems to have a sweet spot where you can kill them quite easily. But not Russia. So I ask who do you hate running into.

Actually I find those with unique ranged units even more annoying than those with melee. Let Korea have their Hwachas, and their walled cities will become unapproachable for centuries.