I must say as much as I love my new 06 wrx tr, I really would like to know what the regular edition sound system would have been like... haha. Good sound is very important to me, I cant just stand by and deal with these so-so front speakers for very long. Can anyone here give a testimony to what they upgraded to and if theyre happy with it? I always used to be a fan of pioneer head units, but whats an excellent brand of speakers to go with these days? I was thinkin pioneer also, or polk, or infinity... Also, even though the TR has no rear speakers, it at least looks like there is a place to put some in thank god. So, 6 1/2 in the front, 4 in the back-- whos already made some changes and is getting a full rich sound? Let me know!