Aubai wrote:
AO was my game prior to SWG, its a good game.
The basic game has instanced dungeons and no PVP.
With the add-on Notum Wars you get PVP
Shadowlands and Alien Invasion I never tried but heard they are very cool.
On friend described the graphics of shadowlands as so good he forgot he was fighting mobs, and started enjoying the scenery

I played AO near release, and I played it again for a free trial about 4 months ago.
Shadowland looks very nice, and is a pretty big departure from the main game. It has its own set of quests, and even the basis for healing and some classes are completely different.
AO had some structural issues when they launched, but the game is pretty good now if you are looking for a sci-fi MMORPG fix.