I have been looking for aftermarket parts for my WRX, where is the best place to go to buy parts? Where has everybody had the best luck and service from?

 

Try teaguesauto.com, or Rallispec.com - I have bought extensivly from both of these vendors and can vouch for their customer service etc.- Both are owned by well respected Subaru tuners that can answer your questions and have an excellent knoweledge of your car.. Good selection of parts between them as well too.
Links:
http://rallispec.com/
http://home.att.net/~teaguesauto/wrxparts.htm