I sold our UTC home in 2002. It’s hugely popular with UTC staff and people working in the research institutes along Torrey Pines who don’t want to commute. Also, the northern part (with all the high rises and condos) is very different than the southern half, which has a more community feel to it. It has decent schools, but is pretty dull and suburban, ie on the weekend everyone is at little league/lawn concert/etc. The southwestern quarter has a bunch of churches/synagogues. It lacks not only a real bar, but a real coffeeshop and a real bookstore which is amazing given the number of students in the area. I liked that it does not have the same stepford-ish feel as Carmel Valley.
That said, most of the houses are typical crappy construction from the 60s and 70s. I would like for our next house to be higher quality or to get such a good deal in UTC that we don’t care that the walls are just wood frames with stucco on the outside and drywall inside and no insulation between.