subies are known the world over for reliability. I had a 1981 wagon that sat for 5 or 6 years in a garage in wrightwood. that darn thing ran like a sewing machine. smooth as butter...It wasn't the vehicle i needed and sold it to an enthusiast...
the newer outbacks and foresters have either a 2.2l or 2.5l motor and honestly the only thing wrong with them is the fact that they have a timing belt that if broken destroys the motor. This needs to be maintained, and if so, ceases to be an issue.
The AWD vicous couplers can be a bit dodgy sometimes, but this is very rare.
They are very safe (just look @ crashtest.com, scroll to bottom for test results) and for what they are, which is just shy of an SUV, they do great.
If you do lots of backroad, rough gravel, muddy, snowy driving...with a lot of tarmac between your front door and the trailhead, this is the vehicle for you. Honestly, a lot of the expo's population could be saving major $$ by picking this vehicle. I'd run one if I could fit three kids in it (not that they "fit" exactly in my XJ..haha)