I voted for Defense / Offense; I like to play Defence maps
My opinions:
-- Bound
I like to play bounds and make them; some people still find them popular, so why not?
-- Defense / Offense
Defence is what I usually play.
-- Movie / Trailers
Some are great (E.g. "Kill Me" by Tuxedo Templar, and "Little Billy Series" by StealthEvilLink); some, however, just plain stink.
-- RPG
I enjoy RPG maps once in a while, but not very often do you come across a good RPG that isn't "omg the dragon has stolen the princess! Go kill everything that leads towards the dragons lair, then kill the dragon, OMFG YOU WIN!!11oneone!1one". (In my opinion, SC and RPG should never have mixed)
-- Arena / Click
These are possibly the best ever if they are made correctly
-- Tactical Warfare
Never played (Maybe I have, but unsure what it is)
-- Melee Style
UMS all the way.
-- Campaigns
B.net campaigns have too much downloading; single player campaigns... what fun is playing alone?
-- Modded
SC modifications? Or edited maps?