When (what day of the week) do you depart? In my experience, Express North tends to fill up early in the work week and empty out later on. The covered section of Express North tends to fill up last.

You could check the availability online and divert to one of the other options if necessary.

Personally, I like Express North if I've got checked bags, because I can easily stop in 2 hr parking and check in, then drop the car at Express North and take the shuttle.

But PnF and TPS are both good alternatives I've also used.