If you are the more adventurous type, I would highly recommend jailbreaking your phone in order to get full functionality. This is neither illegal nor difficult, and it definitely adds a great deal of options to your iPhone. Especially if you like customizing the GUI, ringtones, etc.

M60x2, VP150, M22x2
Sennheiser HD-595
Onkyo TX-SR507, PS3 (40gb)