I have just bought a sony STR-DG820(which is still in the box) to go with some mission FS2s speakers that i have had for some time now, will this be a good match or not?.I have also been given by my brother who is emigrating to a new job.A sony STR-DA2400ES and a BOSE AM15 speaker package which he has not had for long only a mater of months.So i need some advice on which would be the best set up to go with?.The room that it will be set up in is 5m.long by 3.2m.wide i have a 63inch SAMSUNG on the wall at one end and a settee at the othere.So some expert advice or any advice would be very much appreciated.thanks.