Looks like an enlarged Barina. Yuck. VF is a big no no for me. I didn't like the VE at first but it grew on me alot, won't be the same with the VF, pure ugly.
yeah I still dont like the back at all, and I'd say that only the red one is a base model, the maroon and silver have too much chrome trim on the front of them and upgraded wheels to be base models. Conveniently they are all debadged at the rear except the actual Holden badge.
The solid red car in the first picture set certainly looks to be the base model(Omega) but without the tell tale badging.
The Burgundy metallic car (again unbadged) with the chrome trim and classy wheels is obviously the Calais model which has already been shown publicly and is a V8 if you picked the quad exhaust outlets. (The wheels on the burgundy car are identical to those on the Calais show car as are many other features).
Both the red and burgundy sedans pictured look like large "Holden Camrys" to me and would not look out of place with a Toyota badge. The sports models are definitely way better IMHO - at least from the side and front.