Those staplers work OK, they are made for just siding. The stop is preset. I would not get one because I sub contract that out anyway. For as much siding you are going to put on ...you don't need it. Hand nailing is not much slower with firring strips.
If you are going to nail it tight, there is also a siding with a web mesh above the nailing flange which allows for the expantion. I just cannot remember who.....
Try
www.vinylsiding.org