The Region 4 release misses out on:
The Region 1 New Line release misses out on:
Although the expensive Region 1 is RSDL formatted, I would guess that there is one transfer of the film on each layer. We thankfully have the added bonus of two short featurettes.
If pan & scan is your thing, then the Region 1 is for you. Our Region 4 is clearly the winner at the moment as far as extras are concerned.