Hi I was accepted to the Stanford IPS program and wait listed at Berkeley's MPP. I also got into SIPA, Tufts Fletcher, U Chicago CIR, and UCSD IRPS. I'm still waiting on Harvard KSG, SAIS, Georgetown MSFS, along with several UK schools.
The Stanford program is very young as it will graduate its inaugural class this spring. Its a internationally focused policy degree unlike most MPP programs. Its also very small in size, with at most 30 students coming in each year. Since I live near the area, I was able to drop in on their "Practicum", where they given a presentation by the co-founder of Kiva. My general impression of the program is that it offer opportunities I have not found at many larger IR/Public Policy programs like study trips, internship stipends, and student led conferences. The small class size can be considered a benefit or hindrance to future opportunities though. It also shares many of required classes with the Stanford Public Policy program, and electives with the poli sci, law, and econ departments.
GSPP and UCLA are both more domestically oriented policy programs. I have to say that the Berkeley faculty is amazing and by far the best domestic public policy program in the Western United States.
As for the MPA/ID in Harvard, its definitely the most quantitatively challenging program in the field and designed for people with significant international development experience. I decided to only apply for the more traditional MPP because of those reasons.
Personally I am divided over all the programs I have been accepted into. If you desire a broader range of careers than I think a Stanford degree will allow you to go farther than a more established program at a less prestigious university. If you want to find work and network with the policy crowd, then something studying in DC is optimal. I have been hearing from a friend at SAIS about intense competition for great positions in the DC bubble.