I actually had the opposite experience, psycholinguist, but it was equally worthwhile. A school which was my 'second' choice essentially knocked itself off my list during the admitted students weekend. The reasons had nothing to do with anything that would have been apparent through the website, or even meeting with professors and seeing what they're working on. My interests align quite well with this department and the professors are really top-notch. The facilities (or lack thereof), funding (see previous parenthetical), social atmosphere (previous, again), and large size, however, proved to be dealbreakers. I definitely recommend visiting as many places as you can, because the visit can prove invaluable when it comes down to decision-making time.