If you want to be able to install your own software of your choice then the Windows 8 Pro is for you.
Windows 8 RT is something of an odd thing where the only apps allowed are the ones that Microsoft allows. Are you OK with that?
I have been looking at a few tablets, like the Lenovo Thinkpad Tablet 2, HP Envy X2, HP ElitePad, and Acer Iconia W510. But, all of them have Intel Atom processors. I would like to know whether it is worth it to buy a full Windows 8 tablet, instead of RT, with the Atom Processor. Is the Atom not be able to do anything besides what RT can do?
I think I want a 10.1", but someone in my family is getting an 11.6", Samsung Slate 7, so I will see if that is too heavy/big for what I want.