Any one know any good RTS games?

Ok so im Bored out of my mind with all the Rts games ive played that will run on my laptop and i really want to play one that doesn't take too long to learn the interface and has hours of game play in it. I don't necessarily want it to be graphically amazing because my laptop isn't the best machine in the world. ive played the master of orion games and galactic civilisations and sins(sins wont work on my laptop but i have played it) and ive played allot of the BIG brand Rts games like C&C (all of them) and i love Starcraft 2 and empire at war but the point is every time i find a new one its basically just a flashier version of one ive already played but i really want to find one with some different features and graphics that wont cause my laptop to explode. Can anyone help?