In this order for me: Rusted Lands, Shores of Time, First Light, then Blind Watch. Mars would be fun but the map flow seems to lean heavily on one side of the board. Moving control point B would go a long way towards improving it, IMO. Lines of sight in Rusted Lands make it my favorite. I still rock a close quarters weapon because it's a small map but my bros with the sniper rifles can still clean up.