I really like my Galaxy Tab tablet, but once it comes to doing much typing, I prefer to be back on my old Dell D430 laptop which I am using to post this.
This Dell has a really nice keyboard and a 12" screen. I find it a good size to actually use on my lap. Since my DVT problem, I have not been able to sit at a desk or a table for longer than about 30-40 minutes without my damaged leg giving me problems, so I spend most of my computer time now stretched out with the Dell on my lap. A bigger computer would be too heavy to do that with for long.
So, I vote ... smallish laptop for work, tablet for play!