I prefer the looks of the X1, They should have just made the X1 the New X3 in terms of looks & size with all the X3 goodies. And give the X3 looks to the X1 i think that would have done it. Because the lights on the new X3 reminds me a lot of the 1 series head lights. It would match better for some reason in my mind.
But again looks of a car is always depending on personal taste.