[nivik]

just finished the assault of BR set with my friend (i got orks, he got SM) and hes already got a bunch of other SM's, so i want to know, what should i get next to be able to fight SM's?

 

[Wax]

More boyz. The answer for fighting SM is always more boyz. I've also had trouble with an army that had a large squad of lootaz.

 

[morfangdakka]

Here is a must read thread for anybody building a new ork army.

http://www.heresy-online.net/forums/showthread.php?t=39703

After reading it you'll probably be able to figure out what you need for your army.