I've been going through exactly the same process!
I dont know if it is possible for you to tour the campuses of these schools, but if you can i HIGHLY recommend it.
I myself was pretty dead set on USC initially. I knew of their prestige and rep in the industry. However I also made sure to tour Chapman, because I had heard good things.
After the campus tours... my opinion and preference has shifted 100%. Chapman basically reached out and hugged me. Everyone was friendly, small student population, gorgeous campus. And the film school was AWESOME. I had a private tour (guess it was a slow day) from a Freshman in the program. He showed me completely through the studios, sound stages, foley room, motion capture studio, editing bays, audio mixing studios, 500 seat preview theater with 3D HD projectors.... the whole 9 yards, everything top of the line. Students can access facilities 24/7. Seriously. Got an idea at 2 in the morning? Keycard into the building and start working. Additionally, alumni have access to equipment, resources, and stage space AFTER they have graduated!! Fill out a schedule form, and you are in! No rental charges, nada. That is seriously cool.
USC.... is definitely a prestigious university. Massive campus, very educated students, but TONS TONS TONS of people. Medium city sized. As for the film school... my impression was that there was SO much money invested into equipment... that they are almost scared to let students near it. From the mouth of my 'tour guide' who actually mainly talked about admission; "Ya, we have awesome facilities! I wish i could show you, but they are behind a lot of locked doors which I don't have keys to." I felt that was very representative of the school. You have to take large numbers of GE classes before you really launch into the film program. Not so at Chapman; you take classes for your film major from freshman year on out, constantly.
Chapman may not have quite the rep that USC does, but they are RAPIDLY coming up in the industry. They have plans laid out for millions of dollars in expansion culminating in a 'film village' with backlot and even more sound stages, and are very aggressive in expansion programs; part of the benefit of all the tuition they charge, I guess. Speaking of tuition... they are several thousand dollars a year cheaper than USC. Not much, but every bit helps.
I've been pouring myself into this research for the last few months, but visiting made all the difference. If you have any questions about campuses or anything just let me know....
Best of luck!