I had Subaru over 6 year and changed there only on rear swaybar bush. The car was used for it purpose (read not every day driving), it was used mostly for recce car and for track day's. I can say by my experience that car was very reliable.Yeah, and STi's push bad in stock form even when you use the DCCD to push more power to the rear. Careful what you which for. I think the RS is very throttle steerable especially in Drift Mode.
About Ford RS I can say that I feel good about it. The AWD not so good but probably some third party will develop solution.