If the 2011 Q5 Hibrid was available then, I'd have bought
it. They are all fine cars and it all come down to personal preferences. For me I really really do not like the front grill of Audi's at all.
The other thing to consider is your driving habit. I used to be a little aggressive in an X3 but I am in the GLK350, I am more relaxed and are enjoying more.
I guess the Land Rover LR2 is not in your consideration. :)