I've only played two of the Monterey courses (the two CSUMB 18s), but of those two, here are the pros and cons:
Cypress Course
pros :
interesting post-apocalyptic setting - decommissioned military barracks are on either side of most fairways
good for beginner-intermediate players, easy to walk and hard to lose discs
some elevation changes, decent distance shots
teepads often on cement pads, in good shape
cons :
sorta repetitive at points
not super difficult for better players
Oaks Course:
pros :
some beautiful and unique hole designs
high level of challenge, particularly if the wind is up(and it almost always is!)
also interesting setting - e.g. one teeshot is from a ~25 ft high cliff, throwing across the outfield of decomissioned military baseball field
cons:
teepads are natural and sometimes sketchy
lots of places to lose discs, send a spotter ahead on blind teeshots
not a good course for beginning players
You'll get plenty of challenge at DeLaveaga, so I'd recommend the Cypress Course unless you guys are really after a tough round.
Maps and directions here :
http://clubs.csumb.edu/discgolf/map/Enjoy... De La is my favorite course.