I am not absolutely certain that either of these actually has a touch screen, but I am reasonably certain that neither of them has an active digitizer.
The reason I mention this, is that without an active digitizer, you may find that the "Tablet PC" experience you are seeking, is lacking. That is, depending on your application for the machine, you may be disappointed.
Also, I have seen some HP machines that had the tilt & swivel display that looked like this, that did *NOT* have touch screens - and did *not* have an active digitizer. I don't know how to tell from the description on pages you provided, if either or both machines are like that.
I don't see anything that specifically says that they have touch screens.