hi all, i could do with some help please. I m after a blu ray player and i m torn between the sony 350 and 550, i ve got a 40"w series bravia, a sony str-da1200es amp and 7.1 kef 1005.2 s. I know my amp wont decode true hd or master audio and the 350 will do true hd internally and the 550 both internally. My questions are; is true hd 7.1? Is master audio worth the extra £80 (seen the 350 for £192 and the 550 for £275), are there many discs out with master audio? and how would i connect the player to the amp, is it just a hdmi cable or do i need to use a coaxial as well (can t use optical as this is needed for my sky hd. Thanks in advance to anyone who can help!