Mixed bag in Nebraska, Probably more Innova than anything, although Lat. 64 seems to be gaining popularity. Seems that the few stores who sell discs around the Lincoln area sell mostly Innova.
I throw many, as I'm not "brand loyal" but find whatever plastic works best for me from many different friends, found discs, and trial and error, but if you want my main driver, it's a Discraft Flick, so Discraft from me.