I am dealing with a windows RT Tablet user (parents) now. The hardest part is getting used to the interface. For their use, email, web surfing, a few other apps it is fine. Printing to the wireless printer in the house was a snap to set up. The biggest issue was getting email going. Windows RT mail does not work with POP email accounts. They had a pop email account. I needed to link their ISP email to an outlook.com email account. Then link the outlook.com account to the RT mail app. I wanted them to use gmail they said no. t is working fine now.
Honestly the windows RT table works fine. I like having more inputs. The model they have has a laptop keyboard that attaches. With the two pieces together the table is like a touchscreen netbook. Also with the keyboard attached more ports (USB, full size HDMI) are added. If you have crappy wireless, you will hate it. The tablet needs to be online to get everything.
They wanted one to connect to their local library to check out books. The library people said the ipad works but the app is clunky on it. The android and windows version works better.
There is just one example. Your mileage may vary.