This is a very subjective question, because each school has a different philosophy, and therefore will appeal to different people.
For starters, look at the NAAB site to find programs that are accredited.
Second, ask yourself what are you planning to do with this degree? Do you want to practice, teach, research, etc?
Third, how much time do you want to spend on it? Some Masters programs are short only if you have already studied Architecture. Others assume that you have no background at all. Don’t be fooled into thinking that you have to get a Master’s. What you will be getting is what’s known as the first professional degree. At Drexel University, where I am, its a Bachelor’s of Architecture. At Univ. of Penn, it’s a Master’s.
If you are planning to become licensed, expect it to take about 7-8 years. That’s school and the Intern Development Program, which is required for licensing. The IDP is a semi-structured (and semi-flawed, but that’s another debate) program that is intended to give new graduates practical skills to prepare them for practice. After completing the IDP (which can take 3 years if you are really fortunate) you are allowed to sit for your licensing exams. That can take another year if you stretch it out.
That’s general stuff, now for my personal bits. I am attending Drexel University in Philadelphia. It is a 7 year evening program mostly intended for people who are in the industry (say, as drafters) who work during the day and attend classes at night. They do have a day program that is 2 years of day classes followed by 4 years of evening classes and working. The advantage is that you can fulfill IDP requirements while still in school. If you are fortunate, you can graduate ready to take the exam.
University of Pennsylvania has a 3 year Master’s program. I do not know what the requirements are for addmittaance, but UPenn makes no bones about the fact that they are not training practitioners, they are training designers. IMO, Drexel graduates know how a building is made and UPenn graduates don’t care.
As I said, there are many schools with many philosophies. A good book to read is called “Architecture: A Guide to the Profession”. The author talks about the different philosophies, what school is like, what practice is like, lots of things that you don’t get from the school brochures.
Good luck.