Buying a final-run Commodore

Should I wait for the final VF Commodore and buy a Calais sedan, or wait and get the imported Commodore replacement or another brand car? I have a VE Commodore which I bought new in 2009 and has done 97,000km. My concern is that if I wait until close to when production ends the build quality will not be as good. I'm also concerned about parts availability if I keep it for a while.