I just installed my new Pioneer Head Unit. I know everyone has read this before, but until you hear it you will not know what everyone is talking about! I know I didn't!
It is seriously amazing the difference a new head unit makes!!! I still have stock speakers (NOT upgraded from Subaru either). The sound quality is just phenominal!!!! I urge you... if you enjoy music even the littlest bit... go out and get a new head unit. YES even with stock speakers it makes a difference words cannot explain!
I have some sony speakers waiting to be installed soon too, I am anxious to hear how new speakers will sound with it!!!
Here are some pics: