said by Telco:+1
I had both a wifi only and a cellular tablet and can hands down say the cellular version is better and more convenient. I can take it anywhere and have a data connection. Whereas, the wifi is limited to your house, in which case, what's the point of a tablet there anyway.
The main reason I purchased a tablet is to be able to take a device that has a decent size screen on the go. I barely use a smartphone when I have it with me.