I currently have lg pk350 new, happy with.Acoustic Energy AegisNeo 5.1 happy with. onkyo 605,ps3,marantz pm44se.I would like to improve my sound for movies and music.blu ray comes from the ps3 as does music, wav into dacmagic,into 605 or marantz.Would ideally like av receiver to do both,been loking at yamaha 2065 £525,pioneer vsx-lx52£630,would these be a big upgrade from the onkyo, and to what level would my speakers handle a new receiver before they became the week point .any help appreciated thanks.