Comics with significant or centric Rogue and Gambit action from x-men?

A friend of mine is a big x-men fan and through some unfortunate/weird events she lost a bunch of her comics and anyway shes a poor uni student so doesn't have a lot of money to go out and restock so for her birthday a bunch of us decided to go out a buy her favorite ones which are the big rogue and gambit ones (her favorite couple) so if any one could help with which comics we should be looking for or those graphic novels with a bunch in them in on book that you can buy at book stores that would be really helpful :D THANK YOU SO MUCH