Well, I do not know whether liberal vs.conservative (what college would that be?)is better for GT, depends on the personality IMO.
But looking at my S I have been thinking what kind of college would best suit him. People tend to look at DS as a math/science type but he is GT across the board. I think that college like University of Chicago, with its core curriculum would make him grow tons. But it is just my opinion, the choice will ultimately be his four years down the road.