Swamp, I don't do much pizza so might not be a lot of help here.....
On the front page, I put in some pics of MacEggs setup that seems to work really well.....he's using a Kettle Pizza attachment though, so it might be different....
See:
http://weberkettleclub.com/ about 2/3 down the page, currently....
Main thing is to raise the height so they get done evenly.....like you can see in his, firebrick helps guide the setup, so the coal setup works around & with that........
I would imagine one of the 3 sets you've seen are like that & I suppose it depends some on how high of heat you're aiming for...................
A quick description of what those setups are like would give folks a point to maybe better answer what's good about each?
Or, post the links to the videos?