I also considered a VW Passat wagon but decided the styling was bland and I didn't like the idea of burning premium gas. The new Outback came along and I bought a 2011 in early July. It is in my opinion a much better buy and will be more reliable. Looks great too!
For a good comparison of the two vehicles, or any vehicles, go here:
Compare New & Used Cars - Kelley Blue Book You will be able to put several cars side-by-side with data on the cars' dimensions and specs.
Good luck on your choice of vehicle. I am very happy with my choice.