which expansion is best?

which expansion is best? and y?

There is only one expansion, Eye of the North

Prophecies / Factions / Nightfall are campaigns

This is true, so I assume that you have the original game ie. Prophecies. I would say Nightfall given the choice. Basically, because you get heroes which you can customise to suit how and what class you play. You can do this in EOTN but you get less skills to buy/capture as you do in Nightfall as well as less total quests and missions.

In truth though, do them all! All help you become a more complete player

http://www.guildwarsguru.com/forum/s...php?t=10102502