Congrats to everyone!!! Especially for being accepted into multiple programs, job well done!
I spent about a year researching programs and got in contact with prospective advisers as soon as a program made it on my list. I have been ranking programs based off my interactions with POI, interests, funding package, department size and region.
For me personally fit was more important than research interests (I feel comfortable saying this because I spent so much time selecting each program I could not go wrong with any of my POIs). Based of my past research experience I have learned that I have a pretty big umbrella of interests (my interests even within my concentration are so niche having a big umbrella does not necessarily mean much). I hate the idea of being stuck with an adviser that I cannot get along with. It is something I had to deal with as an undergrad, academia is so difficult and stressful as it is I don't want to be in a situation where I am constantly second guessing every interaction. Under fit I would also include age. I spoke to a handful of grad students whose advisors were retirement age or close to and they felt like the advisor was a bit checked out and not as invested. I did not apply to work with anyone that was within a few years of retirement age.
Department size is probably the next thing I am most concerned about. I was able to interact with a decent amount of grad students leading up to applications. Some of these students were from big schools with big departments (I can tell you that these are schools a lot of people in the Anthropology forum have applied to) and most of them felt like they were on their own in the process. Advisers just do not have the time or head-space to prioritize students at any point in the year. The nice (kinda) thing about it is that students tend to band together and really help each other make it through but this also made the departments sound very clique-ish, a lot more room for politics.
As I am typing this I realize politics is not something I have considered but may be important for others to think about. If you know anyone that may have insight they feel comfortable sharing you may be able to avoid an uncomfortable, drama riddle department.
I considered funding packages and region about equally. Because my interests are so specific I knew I would have less options than I already did if I spent a lot of time worrying about being in a "cool" city or town. I was more concerned about the funding package being enough to cover my expenses without having 3 roommates. I have struggled a lot financially through out undergrad (and life in general), I wanted to make sure I did not need a part time job or to take on more of a teaching load than required to survive. I know I am a grad student and I will be broke anyways but I have a good idea of what level of broke I am okay with.
If you have been accepted into multiple programs it means something. I know its a crapshoot but that it makes it more meaningful. Regardless of politics and funding constraints multiple programs chose you, do not be afraid to negotiate your funding package, you are worth it.
@sawdust&diamonds aside from what I have mentioned lab resources are extremely important to me, departments that did not have access to the kind of resources I want and will need for my dissertation did not even make it on my list. I don't know exactly what you mean by strength of the department but I did look into what previous students of POIs were doing. I did not look at the placement rates of the department as whole. Depending on your research interest a particular POI may have a lot of successful students because the POI has a lot of access to resources and a big network, this may not be reflected in the overall placement rate of the department. I did not consider faculty members that were not in my stream even if the department was great as a whole. I did not care if it was four field program, I actually prefer if it isn't (again because of the niche). I hope to have my mind made up two to three weeks before April 15th, I think that maybe just enough time for the department to offer my slot to someone else. Even if department does not have an official waitlist, I know some put aside applicants they won't reject until the last minute. I have been encouraged by both POIs of the institutions I have been accepted to and by one that has not made their decision but it is looking good to take as much time as I need. All three have encouraged me to visit other campuses, ask a lot of questions and take my time making my decision. Do not let anyone pressure you into making your decision earlier than you have to (https://cgsnet.org/april-15-resolution) from my conversations with POIs there are some programs that are notorious for pressuring students and it is highly frowned upon and seen as unethical.
