I have recently dusted of my old hifi system a Arcam Delta 290p and a Arcam 290 amp these are used to power a pair of mission 752s I have upgraded the Arcam Alpha 6 to a Arcam FMJ CD36, but there does not seem to be an appreciable difference in sound from the missions. I have spoken to various dealers none actually recommend changing the amps but they do recommend changing the speakers. I have auditioned a pair of JM Labs Focal 714v, but I was wondering what else is out there in the £500-£800 bracket.