Posting some Soft/Hard ware guides. They're just pictures, and only really applicable presently. Thread should be updated every few years at least. Also, as some of them point out, they are the opinions and presentations of a person, requiring your own judgement.
http://img208.imageshack.us/img208/414/9vlg.jpg
http://img845.imageshack.us/img845/3097/az7s.jpg
http://img22.imageshack.us/img22/7791/lemb.png (Cheap price, high value)
http://img21.imageshack.us/img21/5350/9exz.jpg (Headphones of all qualities)
http://img19.imageshack.us/img19/5853/2bzc.png
http://img208.imageshack.us/img208/414/9vlg.jpg
http://img845.imageshack.us/img845/3097/az7s.jpg
http://img22.imageshack.us/img22/7791/lemb.png (Cheap price, high value)
http://img21.imageshack.us/img21/5350/9exz.jpg (Headphones of all qualities)
http://img19.imageshack.us/img19/5853/2bzc.png