Story mode isn't that great ( and you can't skip the stupid cut scenes..) but Multiplayer really rocks ..when the PoS server are stables...
The game has some really nice maps ( MML is sniper heaven) and the different capabilities of both factions makes for interesting games.
Experienced player will prefer rebels but Mantel are good for players like me that haven't played online fps for ages. The edge nectar gives you allows you to get some kills against vastly superior players...