Don't know how tall you are, but for me outbacks/legacys have always seemed to cramped. The ceiling is to low and to rounded on the sides. The forester (I have an '05 XT) has a large ceiling that goes straight up on the side. For example I've been able to fit:
- Kayak
- 2 29' Mountain Bikes
- Everything from 4 years in college
Definitely go with the forester. You might look like a lesbian but it balls out.