Feeder Cable Question
You can't run quadplex right to the panel. You have to connect it like you see most overhead services. So you would most likely need acouple mast heads and some fusible links to do the job. Cable price is much lower but its going to be a lot more work for you than if you just run an underground pipe and single conductors in it. Some areas homeowners aren't allowed to run it so I would look into that as well.
Nm I didn't check the links. I thought you were talking cable with a messenger line.
Sarcasm is my friend
I'm here to learn too, i do mostly commercial/industrial/new construction and this place is a great way to pick up tips on residential from some good electrical minds. Excuse the spelling, my phone has a mind of it's own.