Here is a response I am posting for a friend:
Striving, I’m a Chofetz Chaim guy so I feel qualified to answer this question from an insider’s perspective.
Chofetz Chaim is unique in that:
1. We follow the mussar mesorah of the Slabodka Yeshiva;
2. we strongly emphasize a kesher with the yeshiva;
3. We strongly emphasize a kesher with a Rebbe, since nobody can see their own faults and blind spots. In fact, our divorce rate is lower than at other yeshivos for this reason;
4. We strongly emphasize klal work after semicha;
5. We hear a great deal of hashkafah from the Rebbeim, ensuring that our opinions on how to view things are sculpted by our Rebbeim and not by our chevra;
5. All of the Rebbeim follow this derech, ensuring that the bochurim receive a consistent message.
I wish you much bracha and hatzlacha in your shidduch endeavors.