Take my comments for what they're worth, but I faced a similar decision and from what I gathered, Chicago's name far outshines the other two. Depends, of course, on your career goals, but if you are looking at a top firm, clerkship, academia, etc., Chicago is the clear choice. Chicago's faculty is also among the top two or three in the nation.
I also feared the being worked to death issue, but while visiting w/ current students they very emphatically conveyed the notion that 1L is hard like everywhere else and 2L and 3L are much, much easier b/c all you need is a "ranking" (there are no actual rankings at Chicago) around the median of the class to get your pick of jobs at virtually any firm in any city in the country. For me, that and all the other benefits I saw when I visited outweighed the money (and location) benefits of UVa and Duke.