Not an easy decision since you can't choose more than one.
Eventually I went with Creator. I like City and Technic, too, but I'm an old-school Town fan and the new line is, of course, city oriented. Creator offers more in that regard for Town.
Technic comes in close. I still have to get used to the studless beams and thousands of pins they need (which raise the piece count and price). But the models overall look quite decent. A little more functions would be nice for the price, it's not my fault that they need 1000 pieces for a bigger set of which 800 are pins which doesn't leave room for function pieces...