I agree that the 08s looks are not that impressive. They are too round and squatty for me, however, it is still a subie and it has a killer engine and lots of potential.
LT1: There are some things you need to consider before making such a large investment.
1.) Most warranties are void as soon as you mod your car unless you buy additional coverage.
2.) Like 'newtothegame' said there's not much available right now in the way of aftermarket parts for the 08.
3.) What are you going to use this car for? I'm assuming that since you want to do some mods you will be utilizing the hp, and aren't you supposed to take it easy on a brand spanking new car until it's broke in?
4.) We drive our subies pretty hard, and that get's expensive, you don't want to have to fix a brand new car, hence the reason for buying BRAND NEW.
5.) Dude, the insurance on these cars is insane. Have you called around and priced? I think you will be surprised.
If you have considered all of these and you still want it....then I say do what makes you happy.
Good luck to you, and welcome to the subie club.