Zurich, Switzerland!
When I was there last spring, I was blown away at many things about that city:
-How easy it is to get around on the public transportation
-How incredibly clean it is
-How much the average person gets paid there
-How in shape the general populace is
-How friendly everyone was
-How beautiful the city was
-How awesome the food is
It was the one city I've been to in Europe where I could actually see myself living. I've been to a lot of really awesome places, but there are always enough reasons for me to say, "eh, I wouldn't live here." The only thing keeping me from moving to Zurich is it being halfway across the world away from everyone and everything I know and love
