Originally Posted by Kestrel
If you need more cargo capacity, the Forester is also a good choice.
The Outback is actually a larger car than the Forester. The Forester is basically an Impreza that in addition to its suspension being raised also has a somewhat taller body. But the Outback/Legacy is a bunch larger in length and width and has more interior and cargo volume.
As far as I can tell the purpose of the Forester is to have something with a bit more of an SUV image than the Outback models which clearly look like cars that have been SUV-ified.