Do you have a background that would make you eligible to take the patent bar? If not, then I'd seriously consider not going into IP, because most employers who are looking to hire for IP really want someone who has the ability to work on things only those who have passed the patent bar are allowed to do.
If you do have the background, then go to Santa Clara. Santa Clara is considered a power-house for IP law, and indeed, it's high average salary is because of those who graduate and work in IP. I think Santa Clara is worth it for IP, but in general, anyone with a technical background is very desirable for many law firms. I vote Santa Clara. I don't know much about DePaul. I live here in the Bay. It's in a great part of the city. Living here is great, plus great weather, you can't beat that.