I am currently a crosstown student about to graduate going to Detachment 060 at USC and I wouldn't have had it any other way. The majority of cadets here are crosstown students who commute from all over the area. It has a smaller number of cadets but that means you have a better chance of getting noticed by the cadre for your performance versus a larger detachment. The training is more intense than what other detachments have in the area (coming from what the other dets have said) and will better prepares you for Field Training later on. The campus is really nice too.
It depends on where you are commuting from and if you have a personal preference for one over the other. Cost can be a deal breaker as well. Once you become a POC cadet at det 060, the AS classes will cost more than LMU even though the cadre have worked tirelessly to lower the costs to a more reasonable level.
If you have more specific questions regarding detachment 060 feel free to PM me and I'll do my best to answer them!