Heres my ten cents worth....
Speaking as a New Zealander now living in Austria (not Australia!) the language thing isnt as bad as people think.
I moved to Austria without knowing a word of German and i have done just fine :)
Apparently it is even easier in Germany as there are more english speakers there?!
Of course, i speak German now... Not perfectly but enough to get by

There are plenty of jobs here if you are qualified and living is cheaper then in NZ or OZ.
The very reason i left NZ, i couldnt afford to live there anymore. The cost of living is crazy expensive!!
The weather is here something else..... But then again you get weather everywhere?!

still better then the damp winters and humid summers of NZ....
If i wasnt so settled here i would go back to Canada! I lived in Calgary for a while, I love it there and the cold is not sooo bad.....
So in conclusion, EU is great and dont fret about the language barrier as long as you are open to learn :)
Canada is also awesome,just invest in a good down jacket! :)
Being a Kiwi i cant really comment on Oz

but sadly better there then my homeland

dont get me wrong, i love NZ! Just wouldnt live there.....