I’m not sure if the repair bills with the 2.5 T would be more than the 2.0 T say, as I would imagine they are essentially all the same parts.
Same with the N/A versions to some extent, the services costs seem to increase with maintaining all the diffs etc which I assume they all share.
I don’t think you really buy a Subaru because it’s a cheap car to run, but if you can swallow the costs they do seem fairly safe and hassle free (excluding the ragged to death not maintained Scooby WRX etc of course).
The cost of up changing to a newer more sensible car stops me from selling mine. It’s in good nick, it’s all fine and it’s still a nice comfy practical car so I put the difference to running it. Better the devil you know.
Final note don’t worry about finding one with the sat nav. It works fine but the maps are so out dated its quicker to ask directions! £400 for a new map DVD, don’t think so thanks buy a Tom Tom!