I like the idea of indirect support from cowardly gretchins, but as Philly said, kannons are so sweet. Basically the workhorse of ork long range heavy weapons. Also, if you compare with zapguns and lobbaz, I feel the kannons are simply the best choice and gives you most out of the BS3 of the Gretchins.
I will have one at the moment. It is huge compared to the grots since it is a 1/35 scale model of a russian ZiS3 76,2mm AT/fieldgun. But since orkz worry more about size and sound, I feel it is a very appropriate kannon!

And when it comes to nobz, I must really agree with Philly that there is really no other ride that show the status of the Nobz like a Battlewagon. Hence why Kellie rides with his nob drinking cronies on the battlewagon Defftread, while his Ard boyz ride on the second one, Steelsquiggoth, and Big Mek Oddball with his KFF (really no forcefield at all, it is Oddball projecting his Posutiv wibez

) mounted on the third one, Gitslayer, who packed both Kannon and Killkannon.
The Killkannon is really a rather sucky upgrade, but it was such a good excuse to have two cannons mounted on one Wagon. My T-34 model now looks even more brutal!
