IO Schools?

For those of you currently in programs, what have you guys heard of the various PhD programs in IO in the US? I'm planning on applying soon and thus far have considered University of Southern Florida and Penn as a couple of good choices. I'm really susceptible to weather, so I'm leaning more toward USF because I've been living in Seattle for 5 years and have never lived in a place with good weather. I know that sounds like a silly reason to go somewhere, so what sorts of differences are there between these PhD programs, and which ones have you heard of or seen produce the best students?