The seminaries have different hanhalos, teachers (may have some that teach in more than 1 of them), and perhaps focus, but since this site only has a few people of seminary age that can contribute to this thread, you might be better off getting information from a different site.
Anyone answering this question should be careful about loshon hara issues. Comparing schools can be loshon hora. Even though there is toeles, that is only the case for the specific person, and does not make it okay on such a public forum.