I bought mine with 76K on it.
I have over 81K on it right now...and I absolutely love it.
I have nothing wrong with it, and I have just started modding it.
I have an 2003 Wagon.
Not sure about the loss in power...mine just keeps making more and more.
The timing belt needs changed at 105K. Why worry about it now? Subaru engineers must have designed it to last longer than 105...or else it would need changed sooner.