A 'roo would be a good choice.
The early 2.5s may be okay now, since most that are likely to have HG failures have probably already had them and been repaired using the later multi-layer head gasket.
Plus, Subies always were a bit of a cult car, so their owners usually understand and care for them better than the average Honda or 'yota owner. The early 2.5 has a bad name in Subaru circles, so they are often fairly cheap. I have seen a couple of good 'nineties Forester 2.5s for around 3K, for example.
If you want real performance, not just the ricer look, any turbo sube is fast. A WRX is a practical small four door that really runs, plus you get a great 2.0 engine, probably a better engine than any NA Subaru has.
We own two Subarus for a reason, and it isn't because I really want to have to fix cars.