My personal favorite is the
BJURSTA... available as a square table with pocket leaves you can pull out to seat 4...
The
FUSION table/4chairs set is nice because all four chairs store underneath the table - giving a nice 3'x3' footprint. (However, I personally don't think the chairs are terribly comfortable, so I encourage you to try them out before you settle on this one.)
There's also the
LESKVIK drop-leaf table that seats 2-4 and is a little more traditional in style...
...and finally there's the
NORDEN drop-leaf that has some nice storage in it and folds down to only about 8" wide! I own this one, and actually use it as a sewing/craft table. It can get heavy, since it is solid birch and has the added weight of the drawers.
(I am such a Dining Dork!) Good luck!