Just make sure you can hook it up to the TV, what ever you get. WE use both.
If you are not using it for work and are mostly checking e-mail and surfing the net a notebook/tablet will do. If you are a gamer then you will likely want a game console. I use a desktop w/36in TV as my monitor and a wireless mouse keyboard to sit in the recliner and surf.
For travel we take the laptop and for the house we have 4 old Desktops (2 Dells and two HP's) that just keep on working. Sometimes I wish one would break down to give me an excuse to get something more modern.
My wife likes her smartphone, Ipad, notebook, tablet and laptop to stay in touch with her sisters, nieces, etc.-yes she has all 5 and uses each one in different situations/rooms of the house or RV. She always has the phone and one other device with her--I do not know why she just does.
I stay DISCONNECTED unless I am at my desktop.
BTW I like the refurbished Dells on amazon.