I admit i have no real clue about amp /receivers apart from giving you out 5.1 etc etc sound and helping connect a lot of sources to one display although displays these days seem to have alot of connections so do i really need a 505 as i have picked this model out of the air as i was at first thinking of getting the 605 only because everyone was talking about. ok so here is what i have got / getting and what i want to do th50px70 - getting. sky+ - getting. scart i assume wii - got. (component) xbox - got. going to use as Media extender/ dvd player once soft modded connection (component ?) 5.1 sound - wanting. tips welcome, tight budget so only thinking of £200-£250 max for speakers. also would an amp be able to output two audio and video sources at the same time as i may also want to feed a sanyo z4 and get 5.1 in another room. so getting sky+ on tv and xbox output on the projector at the same time. I do not want anything above 720 as i am not bothered about HD audio. thanks for any help.