The appraiser I used to share office space with bought in DH and did quite well there before he retired and took his equity to Oregon. His theory (in 1999, when he bought) was that residential neighborhoods near the University would do a little better than those located elsewhere because of the added attraction to the professors and management staff. He always thought SEH was just a big boondoggle.
Another area worth considering are the areas in San Marcos north of Hwy-78. Same builders, same homes, same people. If you like DH you’ll like these areas just as well.