Had a Version 3 Sti. Didn't like it, sold it. Couldn't get better than 10km/l no matter how nicely I drove it. Power delivery was gruesome [lag lag lag lag lag oooooogod gear gear gear], did feel like a heavy car on the road.
The good bits of the car were in the detail stuff, like tie downs in the floor of the boot, how the back seats folded and gave you a place to fit the headrests (it was a wagon).
Even with big whiteline rear sway bar fitted it did feel like an understeer machine.
Plus, I was always terrified of a $5k engine rebuild, it overheating, or somebody nicking it.
Went back to a sub $1000 Charade POS, that didn't use gas, nobody would ever steal, and if anything went horribly horribly wrong, I'd only lose sub $1000.
Although, joke was, third party insurance on Sti and Charade was the same price
My conclusion: Subaru's are ok if you've got deep pockets, otherwise avoid, because things can get very expensive if you're not a mechanic, and something bad happens.