Tigress eludes to the fact that you can't go wrong with any pre-clinical med school curriculum. I completely agree. In the end, wherever you go you will learn the same material. Having a huge physiology class and a huge pathology class with some pharm, is really not that different from having CV, pulm, GI, etc. In the end, you will end up teaching yourself all of it anyway, and you will figure out the best way for you to learn everything. I'm a 4th year student, and I have to say that I cringe when I think that the pre-clinical curriculum design is even the slightest factor for people choosing medical schools. The number of small group conferences vs lectures vs whatever is not at all important. However, despite thoughts that people will "just want to pass," having a P/F pre-clinical was amazing. People can't and won't just squeeze by with a 66% on every exam - you know you need to know most of the material for the rest of your lives, and you ABSOLUTELY don't ever want to fail anything.
If I were doing it again, I'd consider where I want to live, how much money I want to spend, how I liked the students I met, and P/F the first 2 years. It's difficult if not impossible for pre-meds to ascertain an institutions real reputation at this point, especially since it may be different in every specialty. Likewise, it's very hard to get a feel for clinical rotations at the school's different hospitals. Above all, though, please don't put any emphasis on pre-clinical curriculums in your decision-making process.