We previously owned a Forester for 9 years and found it getting a little small for us, esp. in the rear seat. So we got a great deal on a Tribeca and love it. We won't use the 3rd row much but it's nice to have the option. The rear seat is very roomy with the seat moved all the way back (some don't know there is a second lever for sliding back more). The nav is very good once you figure it out (watch the video it comes with!). Handles very well for its size and has enough power especially compared to the Forester. It gets lots of looks and everyone says it looks much better first hand vs seeing pictures.
I really like the interior design. I also like knowing how much work went into safety. 5 star crash test (Passat only gets 4 stars) plus a good chance to avoid accidents with AWD, multiple air bags and stability control. The tiptronic transmission is great as well.
For 07 they addressed many concerns....backup camera, backup sensors, auto up power windows, memory seats. I still think they chimped out on some features, bumper protector, mud flaps, rubber trunk liner, roof racks...all standard on the Outback.