Just my 2 cents about Hjort and the finance placements:
1) Network is small, I agree, but I believe extremely strong. If you look at the finance industry I am very confident that 80% of the Managing directors of Investment Banks will accept to have a phone call with you. I don't think it's frequent at other schools in top 10.
2) You have also to think about the network. Someone from HBS at Goldman is certainly harassed during the recruiting period whereas a Tuck alum has less demand from current students since we are not so many (240 students per year) and therefore is uually ready to help you quite a lot.
3) Goldman, Morgan Stanley, Lehman, UBS, ...have all taken between 4 and 10 students (IB + S&T together) for the summer. I believe this is a strong commitment.
4) Now I agree that I don't see Tuck very strong in the corporate finance environement but definitely playing in the Investment Managment and Investment Banking space.
5) I believe the only school that are really in another galaxy are : HBS and Stanford. HBs is the 1st school, not because it is the best but because people see it as the best. The reputation of the school is a strong aspect, especially if you think about your career at the international level. HBS is the only school known everywhere in the world. Then Stanford is a huge innovation machine and I am sure you can learn a lot there. Other than that I think it's more a fit/environment match.
I am a 2nd year a Tuck, not a pro-Tuck, but I just wanted to come back on those few points.