There isn't really one Maricopa College that has a shorter waiting list than the other. When you apply, you are placed in a pool for that specific application week that you turned your application in. Once the application week is up, you are radomly placed in a position out of that pool. Then you will be able to select up to 5 choices of schools
you would like to go to. 1 being your first choice, 5 being your last.
Right now there are about 1000 people awaiting placement. They just placed Fall 07 and took about 400 people, so that means there is at least a year wait. If you apply now, there will be 1000 people ahead of you. I'm sure after application week there will be at least 1200 waiting which would mean a 3 semester wait. I just found out recently that I'll be waiting until Spring 08. That would make 2 semesters for me.
I'm not sure if this is entirely correct but this what I came up with. If anyone else has their ideas on the placement system, feel free to add.