I'm looking for a good sci-fi MMORPG to play. I currently play Eve and enjoy it, but I want to try something new as well. It doesn't have to involve space ships. I'd like a game with at least one class that uses guns of some sort, open world, sandboxy, maybe something with multiple planets to explore (not a requirement), player controlled economy, excellent pvp/pve and storyline. Oh, and vehicles/mounts, can't forget that.