Ayup to all the above--excepting we call the platform a header and the overall machine a combine.
I assume a lot of yours is white, not hard red? The whites here have been "the coming thing" for it seems almost 20 years now but still the combination of varietal problems and the extra handling for segregation haven't had enough premium available to make them take off on a widespread basis as yet.
We're about 50-50 wheat-milo on the dryland w/ some dryland corn depending on the year. Run feeder heifers on wheat pasture and stalks over winter (assuming it gets in early enough and have the rain to have the pasture--just now getting ground covered this year as were too dry until nearly end of September/mid-October to drill) and then move some to our lots and sell rest off in spring before starting field work.
There was some 100-bu dryland corn around this year...Quite a lot of irrigated corn/soybeans.
Folks keep trying various alternatives for less water-requiring things--there's a little cotton, sunflowers, have tried Jerusalem artichokes, ... but nothing really has taken over for the old staples as being economically viable. The current new idea is canola but until can solve problems w/ shatter and high loss rates owing to the tiny seed size it'll stay that as well...
But, as you say, production equipment is light years from what used to be. We're running 24-32ft headers w/ the size of our operation and ground; couldn't survive w/o the monitoring gear though both for input control and output monitoring to tie the two together though even on our acreage (we're about 2000, larger than average for the county when I left high school, well under now of course).
OBTW, Mom and Dad did a K-State/USDA-sponsored visit w/ a "people-to-people" type touring arrangement where visited quite a number of farms/ranches in AUS and NZ back in the 80s. One of the families returned a visit some years later here (altho was while I was engineering in TN so I didn't meet 'em).
Oh...we have had a few Aussie basketball players over the years at the local community college, though, which has always been entertaining. The latest is now a senior on the womens' team at Oklahoma State/Stillwater having finished her second year here in '06-07.