I love Subarus! We bought a new Forester S in 1999. For its size it wasn't cheap, but felt the safety and reliability issues were covered and that value was there. My wife totalled it in March (an X5 ran a stop sign right in front of her) and she walked away physically unscathed!! Definitely worth it. We loved that car and would buy another in a second but for rear seat room ( 6 ft son). We considered a Legacy but the marginal side crash test rating from IIHS dissuaded us. Thought about waiting several months for the Tribeca, but opted for Lexus RX330. Different class I know, but we are sensitive to safety and reliability. Really not much else out there. Love the RX, but expensive. Checked out the Legacy wagon and couldn't sit comfortably behind myself. If we were looking now, I would definitely buy Tribeca.
So to answer the question, for us, size matters, safety matters (don't mind extra $ to increase odds of safely survivng impacts). I think Subaru is looking to the Volvo model going upmarket, but I think in the marketplace style matters most. I actually like the look of them, especially Tribeca, but many can't stand them. That is the biggest problem I think.