I (like many of you) work for >8 hours a day (on job).
After coming back from work (after a long trudge through the evening traffic) all I can think of doing is some surfing, reading news/blogs, FB-ing, G+, watch some trailers, youtube, music videos etc etc [not at the same time of course].
So mostly (on weekdays) its about "surfing" the web. I currently have a laptop for the above purposes.
Right now if you ask me I would say it would be great to get a 10 inch or 8 inch tablet for doing the above.
I would love to take it and sit on a couch comfortably and do the above instead of seating in a "chair" again. (you can do that with a laptop but honestly I think everyone would accept that's not the best of thing with a [hot] laptop of any-size).
Also, now a days almost all the tablets has a tv-out option, so you can hook up the tablet to your monitor/tv too, if that's an option for you.
So think of your usage-criteria, and requirements before making up your mind about buying a laptop/tablet.
Honestly, I still need a 14-15 inch laptop on the weekends (n sometimes on weekdays too) to do stuff (programmer!).