The only problem with Commodore's and Falcon's is that (until VERY recently) their technology level has been average at best. Even the newer engines are pretty lame compared to most of your Euro or Jap cars.
Not that having 4 or 6 litres going through the rear end with no (well, maybe a little) traction controll to speaking isnt fun, but if your complaining about the 360's fuel economy dont even think about buying one of these.
Build quality is pretty good really. Especially when you consider that they are made buy Aussie's. The biggest beer drinkers per capita of any country in the world. It really does explain the sideways tendancy of the cars
I suppose one plus is that they are cheap(ish). But they are exactly that. Cheap.
You wont find too many in good condition in 15 years time.
Feel free to start flaming me now. I grew up on swedish cars and as such, have a small dislike for Aussie slow-mobiles..... Anything that needs a 4litre displacement to go as fast as others can with 2.5litres isnt good.
Well, thats my rant for the day
Cheers