[morfangdakka]

I was going to say tankbustas are kind of the master key to solving most problems for orks. The blitz brigade would be good but I was also thinking a trukk rush mixed with bikers might be good with Forgeworld Da Rippa that turns your bikes into troops. This way with tankbustas, MANZ and bikes all racing around your opponent will have trouble figuring out what to shoot first.
Something to consider would be Grot Tanks with grotzookas instead of lobbas. Grot tanks are surprisingly fast and BS3 they can shoot good.

Another option would be to allie in a Imperial Knight.

 

[morfangdakka]

You can find the rules in Imperial armour 8 or a cheaper way is to just download the latest dread mob rules from forgeworld. It has the rules for grot tanks and da rippa then just print them out.
http://www.forgeworld.co.uk/resourc...mmer_40000/Ork_Dread_Mob_Army_List_Update.pdf