I haven't seen it posted yet, but among your prime considerations should be matching up the JUCO academic side to whatever type of school your son hopes to finish at. Not all JUCO classes meet the criteria for 4 years school admissions and a kid can get really messed up trying to sync up two years in the community college to match what a third year would have at their destination school. That can be a big roadblock here in California if a kid did not attend a CA community college. I heard one parent say the further away the 4 year is from the JUCO, the more likely there is to be a class credit problem.
I don't know if it is as much in the areas you are looking at but others can weigh in.